Cycling Shoes

Your ticket to the trail The Flatline Mountain Bike Shoe is a flat shoe that keeps you connected to the pedals and ready for the attack, no matter what Mother Nature throws your way. A grippy Vibram outsole partners with a reinforced toe box for protection and durability, giving you the confidence you need to tackle any trail. Durable mountain bike shoe for riders who prefer the feel and confidence of flat pedals. - inForm Performance last is our roomiest, most relaxed fit for comfort on-and-off the bike - Grippy, Vibram rubber outsole provides an optimized shoe-to-pedal interface - Uniform tread pattern offers consistent, predictable interaction between pedal and outsole - Directional tread at toe and heel gives off-bike scrambling traction, uphill or down - Durable synthetic uppers are perforated for breathability and hold up to the demands of all off-road riding - Reinforced toe box protects against abrasion and shields trail debris - Shock absorbing EVA midsole dissipates forces from impacts - Laces provide ultimate fit control, and integrated lace keeper securely holds them tight to shoe for pedaling

More fun with more flow Climb to new heights, roam further, and rider harder in the Foray Women's Mountain Shoe. An undeniably comfortable off-road cycling shoe featuring a Boa IP1 dial for a superior fit on rides of any length and intensity. No matter where or how you ride, this shoe won't quit thanks to a stiff sole with a durable upper with the added protection of GnarGuard for an overall reliable trail shoe. - inForm Race last offers a slightly roomier, high-performance fit - Nylon composite Bronze Series sole provides stiff yet walkable performance - Single Boa L6 dial allows easy and precise fit adjustments - Tachyon rubber outsole allows great grip in all terrains - Stiffness index 6 of 14 - Durable, GnarGuard rubberized coating protects against abrasions and fights debris - Compatible with 2-bolt SPD-style cleats - Women Specific Design is engineered specifically to yield better fit and greater comfort for women

KEY PERFORMANCE FACTORS SUPERIOR POWER TRANSFER An all-new ExoBeam outsole features a dual-beam design made with ultralight 100% carbon fiber for superior toe-heel stiffness. The unique design significantly boosts power transfer while allowing enough torsional flex for natural foot movement. This helps minimize lower leg strain during the pedal stroke with zero watts wasted. PERSONALIZED FIT Most cycling shoe enclosures press the foot down toward the sole. The Surge Pro’s redesigned ExoWrap system draws the foot up into the shoe, using its unique wrap-around design and new micro-adjust Li2 Boa® reels. The result is a 360-degree foot closure that gives you an ultra-comfortable and personalized fit. COOL COMFORT A new polyurethane coated mesh upper with laser cut micro-perforations delivers maximum ventilation combined with long-lasting durability. The seams are welded rather than sewn, which helps minimize weight and gives these road shoes a sleek profile with a supple feel. - All-new ExoBeam outsole features a dual-beam design made with ultralight 100% carbon fiber lay-up construction for superior toe-heel stiffness - An all-new 360º wrap-around upper with high frequency welded seams and laser cut micro-perforations for optimal ventilation and a balanced foot climate - All-new internal ExoWrap structure for an ultra-comfortable, 360-degree foot enclosure and a customizable fit - All-new exclusive performance last offers all-day comfort and increased fit options - All new micro-adjust Li2 Boa reels give a super secure and comfortable fit, Ultra grippy SharkSkin heel liner gives a secure, slip-free fit even under the harshest conditions - Removable sock liner with tunable arch support and TransTextura Plus antimicrobial layer promotes a balanced foot climate

Power up steep climbs. Maximize your watts in the final sprint. Go longer distances with more comfort and less strain. The Surge Pro combines a new 100% thermoset carbon ExoBeam outsole combined with the BOA System closure featuring BOA Powerzone for direct pull ExoWrap support to provide a seamless connection to your bike. Promote your experience with the exact same direct power and efficiency as Giant’s pro riders. - Unique Slip-Last Construction allows the forefoot to be stiff while enabling torsional rotation of the rear and mid foot. - Unique on-the-fly micro-adjustment BOA System closure featuring BOA Powerzone with direct pull ExoWrap to support to every foot and arch type - New 100% thermoset carbon ExoBeam plate produces the lightest, stiffest plate that exceeds industry standards - Weight: 240g (size 43)

A tough, insulated, waterproof, and comfortable shoe built for riders without an off-season. - Waterproof GORE-TEX Insulated Comfort liner for maximum protection and warmth - Integrated lace shield design with high cuff cover construction - A fleece-lined insole for added insulation and heat retention. - 360-degree reflectivity for high visibility - MICHELIN high-performance, dual-density rubber outsole offers superior traction with unmatched durability, stability, and slip resistance - Torsional midsole “TORBAL” allows natural rider “flow” motion during downhill descents

The Rally mountain bike shoe's super durable design stands up to daily abuse no matter where you ride. It has added support and protection from toe to heel for confidence when the trail gets rough. Whether you're on the Trek Factory Racing team trying to shave seconds off the DH and Enduro clock, or just need a super comfortable and highly practical trail shoe, the Rally is ready to blast down the mountain looking fresh. - Durable synthetic leather upper - Abrasion-resistant coating on the heel and toe caps for added durability - A reinforced, durable toe box for improved protection - Shock-absorbing EVA midsole - Hook-and-loop strap provides a more secure fit that hugs your foot in place - Compatible with 2-bolt SPD-style cleats

Experience ultimate power transmission with the XC9 S-PHYRE mountain shoes. Synthetic Leather - Lighter, stronger and more durable than natural leathers Reinforced Spike Mount - Reinforced spike mount for extreme conditions External Heel Cup - External curved heel cup suppresses foot twist and roll Carbon Sole/Mid Sole - Carbon fiber composite sole/mid sole Carbon Plate - Inserted in ball-grid section Harder Contact Block - Promotes stability and pedaling efficiency - Dedicated X-Country and Cyclocross no-compromise racing shoes - Low stack height sole helps stabilize foot during the downward pedaling stroke - A one-piece surround upper, narrow bottom, rounded heel, and slim toe box provide a glove-like fit - Dual independent Boa IP1 dials allow quick and precise micro-adjustment - Adjustable powerzone wire guide holds forefoot securely - Proprietary MICHELIN outsole minimizes weight and offers increased traction

Constant comfort. Subtle strength. Unlock your potential and go farther with the Sonic Women's road shoe. Equal parts stiff and comfortable, compatible with both 2-bolt SPD-style and 3-bolt cleats, this shoe is ready for anything. Product details - inForm Race last offers a slightly roomier, high-performance fit - Nylon composite Bronze Series sole - PowerTruss sole design improves stiffness without adding significant weight - Boa L6 dial for precise adjustment - Stiffness index - 7 of 14 - Compatible with 3-bolt and 2-bolt SPD-style cleats (2-bolt mounting plate sold separately) - Women Specific Design is engineered specifically to yield better fit and greater comfort for women Specifications - Upper Fiber Content: 56.9% PU / 10.5% Polyester / 32.2% Nylon / 0.4% Steel - Sole Fiber Content: 85% Nylon / 15% Fiber - Liner Fiber Content: 100% Polyester

Ready to pedal. With every pedal stroke, you’ll know the Macha Comp works for you, helping you make the most of your power, helping you increase your speed, helping you stay comfortable the whole ride through. The Liv Motion Efficiency System provides the perfect combination of a stiff and highly efficient pedaling platform with just enough torsional flex to keep you comfortable as your energy transfers from you to your bike. Together, you’re a pedaling machine and the miles will drop behind you. - Injection molded TPU elements in both heel and toe help protect the nylon composite ExoBeam plate from wear while off the bike - Liv’s Motion Efficiency System nylon composite outsole (30% glass fiber, 70% nylon) —keeps the forefoot stiff while enabling torsional movement of the rear and mid foot - Specially developed last increases motion efficiency and relaxed fit - Highest quality upper material offers excellent support, comfort and ventilation at extremely low weight - On-the-fly micro-adjustment Boa closure system integrated with ExoWrap technology offers unsurpassed fit and support - Breathable TransTextura Plussockliner lets heat escape and keeps feet feeling fresh

Step into Wølfgar, the world’s most advanced winter cycling boot. We’ve combined decades of winter cycling experience with NASA-grade insulation materials for a boot that keeps feet warm and dry down to -25ºF. Wølfgar is a boot worthy of singletrack sessions or multi-day expeditions in the harshest winter weather. - Our lightweight three-piece proprietary bottom assembly is compatible with both flat pedals and 2-bolt cleats, and features a rubber outsole with microglass lugs for traction on ice - Waterproof materials and construction keep the elements out, while aerogel under the foot and over the toe block frigid air - On the inside, Wølfgar’s reflective thermal lining retains warmth, and a removable wool and faux-fur liner wicks moisture and insulates

45NRTH Wölvhammer BOA® winter bike boots make year-round riding possible, with high-tech design and materials that stand up to snow and ice. Get yours here. Most winter boots aren't made for riding bikes — they're too warm in some spots or not warm enough in others, and they're not optimized for pedaling. Wölvhammer BOA® boots are the answer for winter riders. Designed and built for the rigors of real winter riding (deep snow, slippery ice, cold pedals), These winter bike boots are rated for comfort from 0º to 25ºF (-18º to -4ºC), slotting between our Ragnarök and Wølfgar boots. Take on winter rides with Wölvhammer. - Rated for 0º to 25º F / -18º to -4º C comfort - The BOA® Fit System delivers micro-adjustable, precision fit engineered to perform in the toughest conditions - Hook-and-loop upper strap helps secure boot - Removable synthetic liner boot for quick drying - Waterproof breathable membrane to manage moisture - 200 g of Primaloft® insulation - Aerogel insulation underfoot blocks the chill from snow, ice, and cold pedals, and allows for insoles without sacrificing warmth - Non-slip sole for walking on icy surfaces - Compatible with flat and clipless pedals

Trickle-down performance. Surge Elite features all of the performance benefits of Surge Pro thanks to a new thermoset carbon/glass fiber composite ExoBeam outsole combined with a BOA System closure with indirect ExoWrap independent arch support to provide a seamless connection to your bike for maximum pedaling efficiency. The unique bonded seam non-woven PU upper material offers optimal support and low weight for hours of comfort in the saddle. - Bonded seam non-woven PU upper material offers optimal support, low weight and conforms to virtually every foot type - Die cut perforations provide ventilation and promote a balanced foot climate - Unique on-the-fly micro-adjustment BOA System closure with indirect ExoWrap independent arch support for every foot and arch type - Exclusive to Giant, Slip-Last construction allows the forefoot to be stiff while enabling torsional rotation of the rear and mid foot - Cycling-specific performance last enhances efficiency and overall performance - Exclusive ExoBeam technology with thermoset carbon/glass fiber composite is slightly heavier than the Pro plate but features the stiffness and performance benefits - Redesigned ExoBeam technology produces better pedaling efficiency while reducing strain on the knee and ankle joints - Injection molded TPU removable heel element and fixed toe protect the ExoBeam plate from wear - Grippy SharkSkin heel lining for secure heel fit - Removable sockliner features TransTextura Plus antimicrobial layer to help promote a balanced foot climate - Weight: 315g (size 43)

Ride what the pros ride The most sophisticated road cycling shoe on the planet. XXX is professional grade from heel to toe. It's meticulously constructed of the most luxurious materials available, and renowned for its tailored fit and unparalleled pedaling efficiency. This attention to detail has made XXX one of the most sought after race shoes by the world's best riders. Product details - inForm Pro last delivers an ergonomically optimized, high-performance fit - 100% OCLV carbon sole is extremely lightweight and stiff for efficient power transfer - Dual, independent Boa IP1 dials for precise, zone-specific fit adjustments - Lightweight and luxurious TPU upper material for supportive comfort and perfect perforation pattern for breathability - Stiffness index 14 of 14 - Asymmetrical design and superior lace routing system reduces top-of-foot pressure while providing a more secure fit - External heel cups and no-slip heel lining prevent slippage and chafing while reacting to your movements more quickly - Neoprene pads at top of the tongue reduce pressure against dorsal tendon for better mobility

Time to tackle new challenges The Vella women’s cycling shoe was designed to deliver the performance benefits of a cycling shoe with the go-anywhere fashion of a street shoe. All-day comfort and versatility means this clip-in shoe is perfect for the woman who's just active off the bike as she is on it. Key features - inForm Race last offers a slightly roomier, high-performance fit - Glass-reinforced internal nylon plate with full Tachyon rubber outsole - Compatible with 2-bolt SPD-style cleats - Stiffness index - 6 of 14 - Women's Specific Design is engineered to yield a better fit and greater comfort for women Details - Upper Fiber Content: 58.7% PU / 10.9% Polyester / 30.4% Nylon - Sole Fiber Content: 100% Rubber - Liner Fiber Content: 100% Polyester

Shimano S-Phyre shoes offer the ultimate in comfort, adjustability, and power transmission. Specs: - Stiffness Index: 12 - Microfiber Synthetic Leather: Supple, light yet stretch-resistant material - External Heel Cup: External curved heel cup suppresses foot twist and roll - Carbon Sole/Mid Sole: Carbon fiber composite sole/mid sole - Hollow-Channel: Lightweight, ultra-rigid hollow outsole - Wider Cleat Adjustment: Expands range for mounting cleats Features - Integrated sole and upper construction sets a level of fit, stability, rigidity and lightweight performance - SHIMANO DYNALAST helps to reduce braking loss - Wide range fit adjustability accommodates various shapes of feet - Dual independent Boa IP1 dials allow quick and precise micro-adjustment - Adjustable powerzone wire guide holds foot securely - Built in drainage holes for rainy conditions

Tough enough to withstand even the wettest, coldest rides, the MW702 is engineered to keep you mountain biking comfortably through the winter months. Sporting a fleece insole liner, a waterproof and breathable GORE-TEX layer, and durable ULTREAD XC grip, this shoe is built for those that don't slow down when the temperature drops. Features: - Winter Mountain Bike Shoe: the MW702 is a versatile wet weather racing shoe - Waterproof Shoe: insulated GORE-TEX layer keeps the warmth in and the elements out - High Cut Design: tall cuff construction around the ankles gives added protection - ULTREAD XC Outsole: rugged rubber outsole offers supreme grip in slippery conditions off the bike - Adjustable Fit: L6 BOA® dial closure system cinches in seconds for a secure fit every ride EXCEPTIONAL TRACTION When the going gets tough, confidently keep your footing. ULTREAD sole technology, a new proprietary rubber compound and sole pattern, delivers enhanced durability and traction while walking or pushing your bike over slick terrain. PROTECTION AGAINST THE ELEMENTS The MW702's waterproof GORE-TEX® comfort liner insulates against the cold and wet, with an insole fleece liner for extra heat retention. A wraparound lace shield design provides additional weather-proofing, with a tall ankle cuff to keep moisture and cold breezes out.

Shimano S-Phyre shoes offer the ultimate in comfort, adjustability, and power transmission. Specs: - Stiffness Index: 12 - Microfiber Synthetic Leather: Supple, light yet stretch-resistant material - External Heel Cup: External curved heel cup suppresses foot twist and roll - Carbon Sole/Mid Sole: Carbon fiber composite sole/mid sole - Hollow-Channel: Lightweight, ultra-rigid hollow outsole - Wider Cleat Adjustment: Expands range for mounting cleats Features - Integrated sole and upper construction sets a level of fit, stability, rigidity and lightweight performance - SHIMANO DYNALAST helps to reduce braking loss - Wide range fit adjustability accommodates various shapes of feet - Dual independent Boa IP1 dials allow quick and precise micro-adjustment - Adjustable powerzone wire guide holds foot securely - Built in drainage holes for rainy conditions

Featherweight gravel racing shoes. Carbon Sole/Mid Sole Carbon fiber composite sole/mid sole Heel Stabilizer Improves heel hold - Super stiff and lightweight carbon composite sole - System engineered with SPD pedals for maximum pedaling efficiency and stability - Lightweight, abrasion-resistant TPU lugs for the best balance of pedaling performance and off-the-bike capability - Surround upper pattern provides the perfect balance of holding power and absolute all-day comfort - Boa IP1 with dual micro adjustment function

Specifically designed for gravel rides and long hours of cycling on terrain full of surprises, the Sidi Gravel shoe offers comfort and stability on road and off. -The Tecno-3 Push System dials in fit along the entire length of the shoe, adapting the upper to the shape of the foot for a customized fit -All new proprietary Sidi Wire material that is completely non-binding for intuitive and effortless on-the-fly adjustments -Like most Sidi small parts, the Tecno-3 System is serviceable and replaceable -Polyurethane shock absorber with inner padding designed to protect your feet -The reinforced heel cup that stabilizes and supports the heel. Anatomically shaped plastic, reduces heel slip and provides increased power transfer -Provides additional foot protection in the event of a crash -The Sidi MTB Competition Sole has been specifically designed for gravel biking and can be fitted with two toe spikes on the front for traction in difficult and muddy conditions. Toe spikes are sold separately

The all-new Union BOA® Shoes are set to take your mountain bike adventures to new, more adjustable, and sendier levels of "yew!" Get more power to the pedal and customize your fit to perfection with the dual BOA® Li2 system featured in these trail-ready shoes. Built with robust features including a molded cap design to protect against rock strikes, the Union mountain bike shoes handles the rigors of trail abuse with ease. With a lightweight and precise fit, the low-profile, custom-tuned midsole ratchets up your pedal grip and feel, giving you more comfort while you shred. Power to the pedal is optimized care of the molded internal stiffening plate, but it's not stiffness at the expense of off-bike comfort. Should you have to hike-a-bike around that downed tree, you're all good. The sole is designed using the Ultratac™ rubber compound, with the engineered tread pattern providing best-in-class grip and durability, while the 2-bolt cleat system is compatible with most major clipless pedal suppliers. Versatile and with understated style, Union BOA® Clipless MTB Shoes were born to rip, transitioning from sweet single track to your post-ride tailgate brews with ease. - Clipless mountain bike shoes with Boa® - Dual Boa® Li2 system secure, on-the-fly adjustability - Ultratac™ outsole balances grip and durability - Reinforced toe for protection against rock strikes

Superior simplicity Quantum is a no-nonsense mountain bike shoe perfect for anyone looking to clip-in and hit the trails. This two-bolt compatible shoe features the reliable adjustability of three zonal hook-and-loop straps, so you always stay comfortable and secure when pushing the pedals. If you want to look sleek and sophisticated, look to Quantum for a more efficient ride. A functional, confidence-inspiring off-road cycling shoe for riders who are venturing into the clip-in riding experience. - inForm Race last offers a slightly roomier, high-performance fit - Three hook-and-loop closure straps provide a wide range of adjustability - Durable synthetic uppers are perforated for breathability, and hold up to the demands of all off-road riding - Rugged, GnarGuard outer material at toe and heel protects against abrasions and trail debris - Nylon composite Bronze Series sole provides stiff, yet walkable performance - Stiffness index 6 of 14 offers some forgiveness and elevates comfort - Tachyon rubber lugs allow reliable grip and traction in all types of terrain - Compatible with 2-bolt SPD-style cleats, plus placement indicators guide proper cleat installation and alignment

Designed specifically for cool and wet conditions, Ragnarök provides a high level of water resistance, moisture regulation, and comfort in a performance cycling shoe. Constructed with a BOA closure, waterproof membrane, and rubberized shell that extends above the ankle, Ragnarök delivers unrivaled weather protection in the wettest and muddiest of conditions. - Hook-and-loop neoprene ankle - BOA closure with IP1 low power reel - Works with 2-bolt mountain compatible cleats - Black finish - 25ºF+ / -3ºC+ Comfort

A stylish clip-in spin shoe designed for performance on the stationary bike and comfort during pre- and post-workout routines. All of the workout. None of the routine. Bontrager's all-new Cadence Spin Shoe brings performance and style to the spin studio. It's designed to help you ride beyond your fitness and indoor cycling goals, delivering the right fit for intervals on the spin bike, comfort during pre-ride stretches and post-ride burpees, and endless style on or off the bike. Compatible with two-bolt, SPD-style cleats. Product details - inForm Athletic last offers a roomier fit for on- and off-bike comfort - A single BOA L6 dial for precision fit and easy micro-adjustments - Mesh main material in upper allows for maximum breathability - Cushioned EVA foam midsole for all-day comfort - Sturdy sole with great traction for excellent walkability - 2-bolt SPD-style compatible (cleats and pedals sold separately) - Slip-on construction makes for easy on-and-off and ensures neoprene tongue stays put - Heel counter provides great heel lock for power transfer and prevents heel slip with cats' tongue material

Make no compromises Simply our fastest, most advanced mountain shoe ever. The XXX mountain bike shoe was designed for those that demand the most of themselves and their equipment. It's the exceedingly light, stiff, zero-compromises trail shoe for XC and CXC racers that value efficiency, minimal weight and maximum stiffness. Product details - inForm Pro last delivers an ergonomically optimized, high-performance fit - 100% OCLV carbon sole is extremely lightweight and stiff for efficient power transfer - Dual, independent Boa IP1 dials for precise, zone-specific fit adjustments - Lightweight and luxurious TPU upper material for supportive comfort and perfect perforation pattern for breathability - Stiffness index 14 of 14 - Asymmetrical design and superior lace routing system reduces top-of-foot pressure while providing a more secure fit - External heel cups and no-slip heel lining prevent slippage and chafing while reacting to your movements more quickly - Durable GnardGuard outer material protects against abrasion and fights debris

All-around trail performance Hear the call of the trail? Adorn is the all-around performance women's mountain bike shoe that awakens the spirit of adventure in trail riders everywhere. Grippy Tachyon rubber soles deliver off-bike confidence while the durable reinforcement of GnarGuard offers protection against trail debris. Product details - inForm Race last offers a slightly roomier, high-performance fit - Glass-reinforced internal nylon plate with full Tachyon rubber outsole - Reliable 3-strap hook and loop closure system - Stiffness index - 6 of 14 - GnarGuard outer protection fights away trail brush and debris - Women's Specific Design is engineered specifically to yield a better fit and greater comfort for women Specifications - Upper Fiber Content: 58.7% PU / 10.9% Polyester / 30.4% Nylon - Sole Fiber Content: 100% Rubber - Liner Fiber Content: 100% Polyester

- Motion efficency system (mes) combines a stiff and highly efficient pedaling platform with just enough torsional flex to allow for natural foot, ankle and knee movements during the pedal stroke - Exoflex built-in flex zone allows the toe area of the shoe to move independently of the main sole to optimize the natural flex of the toes, reduce heel slip, and improve overall traction - Stiff composite exobeam outsole is protected by a full-cover rubber tread to provide outstanding traction - Seamless upper provides protection and ventilation while the toe box area helps protect against obstacles on the trail - Quickfit upper with a single ratchet buckle system and two hook-and-loop straps for simple on-the-fly adjustments

Originating from the conceptual standpoint of a mountaineering boot, the new and evolved Wolvhammer is lighter, more comfortable, and grippier. The overhauled design features a removable synthetic liner and a three-piece proprietary bottom assembly compatible with flat and clipless pedals. When the cold winter creeps in, Wolvhammer has you covered. - Removable synthetic liner boot for quick drying - 3-piece proprietary bottom assembly is lighter, warmer, and offers more walking traction - Aerogel insulation blocks cold cleats and allows use of preferred insoles without sacrificing warmth - Real rubber outsole with microglass lugs. Comes with removable cleat plate for flat pedal use - Single-zone BOA closure with a gusseted tongue to keep winter elements out and warmth in - Suggested temperature range: 0° F (-18° C) to 25° F (-3° C)

- Motion Efficency System (MES) combines a stiff and highly efficient pedaling platform with just enough torsional flex to allow for natural foot, ankle and knee movements during the pedal stroke - ExoWrap hugs the foot to create a customized, secure fit - ExoBeam, nylon outsole - Shock-absorbing EVA midsole - Removable cover for the window of the cleat makes the shoe compatible with flat or 2-bolt cleats

BOLD NEW LINE. Developed with input from Giant Factory Off-Road Team enduro pros, the all-new Line trail shoe is designed for versatile performance on or off the bike. Line provides efficiency and grip while pedaling, plus the comfort, protection, and stability that’s essential for aggressive trail riding or enduro action. Features - Seamless hydrophobic material upper provides protection and ventilation - QuickFit upper with one buckle and two hook-and-loop straps for on-the-fly adjustments - ExoWrap design and construction for enhanced fit - MES ExoBeam molded nylon midsole plate provides pedaling stiffness with the flexibility you need for better stability and traction on rough terrain - Aggressive full-coverage rubber tread for stability and traction - Trail-specific outsole design improves traction and stability - Rubber toe box area protects from obstacles on the trail -ExoFlex zone optimizes the natural flex of the toes - Removable single-density ErgoComfort Insoles - Wider range fore and aft cleat position adjustment

The Garneau Klondike M3 Cycling Boot offers ultimate protection and keeps feet warm on long winter rides. - High volume fit last - Cordura 1680D with 400 g ThinsulateTM to resist cold temperatures down to -20°C/-4°F - Boa® IP1 with silicone elastic and neoprene opening with YKK zip - VIBRAM® DURATREK outsole - 3-layer construction insole with felt, 3 mm PE and foil