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Undergarments

Control your climate with Bontrager baselayers.

Available in multiple fabric weights, each with its own unique construction, and each designed for moisture-wicking, quick-drying, and 4-way stretch mobility, Bontrager baselayers provide the specific thermal performance you need to stay comfortable, no matter how intense your ride or varied the conditions.

Smartwool Women's Merino 250 Base Layer 1/4 Zip
$100.00
Smartwool's best selling, and warmest, base layer, just got a little more refined with an improved fit, chafe-free seam construction and panels that offer more comfort with a pack. - Slim Fit - Interlock knit - 8" (20 cm) center front zip - Back body seam wraps to front for body enhancing fit - Shoulder panels eliminate top shoulder seams - Flatlock seam construction is designed to eliminate chafing - Knit in Vietnam: 100% Merino Wool - Garment Weight: 230 g = 8.1 oz - Style: SW0NP221
Smartwool Merino 150 Base Layer Bottom
$80.00
Cold days on the ski hill, blustery dog walks and spring camping: things that are all made better by the Merino 150 Base Layer Bottoms. Featuring Core Spun technology, Smartwool wrapped Merino around a nylon core for added durability while still keeping the temperature regulation and moisture management benefits of ultra-soft Merino next to skin. A wide waistband and smooth stitching up the comfort factor on these year-round favorites. - Slim Fit - Wide elastic waistband (40 mm) designed for ultimate comfort; keeps Merino next to skin - Stretch merrow stitching for comfort and a feminine aesthetic - Size M inseam: 29.5" (75 cm) - Knit in Vietnam: 87% Merino Wool, 13% Nylon Core - Garment Weight: 133 g = 4.7 oz - Style: SW015257
Louis Garneau Verona Bra
$37.99
The Verona offers four super trendy designs, leaving you with the difficult task of choosing which color will suit you best for the summer. This bra offers perfect support for cycling as well as exceptional moisture control. The top parts of the front and back are made with X-Lite Mesh, a fabric known for its incomparable comfort and ventilation while the front is made of Pro + fibre LYCRA a fabric with great compression. Technical Details: - Jersey Fabric : Pro + LYCRA fiber: Support and shape recovery - X-Lite Mesh: Ultra light, optimal ventilation - Jersey Fabric Technology: Breathability - Jersey Visibility Features: Back reflective accents
Bontrager B2 Long Sleeve Baselayer
$42.49 - $50.99 $84.99 Up to 50% Off
Retain warmth and stay dry with the B2 Long Sleeve Baselayer. A blend of polyester and wool makes it a comfortable first layer for great rides in mild temperatures.
Bontrager B1 Short Sleeve Baselayer
$23.99 $39.99 40% Off
Even warmer rides can benefit from the right baselayer. Bontrager's lightest weight baselayer fabric, B1, is a comfortable first layer of Profila Cool fabric enhanced with 37.5 technology that regulates the body’s relative humidity to maintain ideal core temperature, allowing greater on-bike performance. Comfortably fits under every jersey you own. Key features: - Profila Cool fabric powered by 37.5 active particle technology - Conditions-appropriate, tuckable length - Drop tail for a precise on-bike fit - Fitted cut provides streamlined body fit for enhanced performance
Bontrager Troslo inForm Cycling Liner Short
$69.99
The Troslo inForm short is unlike any cycling liner short you’ve seen before. Dual hip pockets easily hold a variety of essentials, while comfortable mesh ventilation and supportive compression materials fight fatigue to make this the ultimate liner to go under your shorts and prevent chaffing. Key features - Troslo inForm BioDynamic Chamois - comfortable, dimension-optimized cycling pad - Two pockets on legs for nutrition wrappers or lip balm - Profila Power main materials with strategically placed Profila Cool inserts - Clean cut compression leg gripper - Flexible fit waistband for superior comfort - 9.5" (24cm) inseam - Fitted cut provides streamlined body fit for enhanced performance
Louis Garneau SF-2 Plastron
$22.50 $44.99 50% Off
Garneau's SF-2 Plastron is more than just a season-lengthening base layer, it's technical armor against the cold. This sleeveless tee's front is constructed with Garneau's Light WindDry 2 fabric, which blocks wind and is water-resistant. And, the back is crafted from light, soft Supra Filo 2 fabric, that uses honeycomb construction for exceptional moisture transfer and breathability so you stay dry and comfortable on every ride.
Bontrager B2 Short Sleeve Baselayer
$34.99 - $41.99 $69.99 Up to 50% Off
Retain warmth and stay dry with the B2 Short Sleeve Baselayer. A blend of polyester and wool makes it a comfortable first layer for great rides in mild temperatures. • Profila Dry powered by 37.5 technology and Merino Wool on back and arms provides a great balance between moisture transfer and warm when wet in mild, variable conditions • Conditions-appropriate tuckable length • 3" (8cm) drop tail for a precise on-bike fit • Fitted - Streamlined fit for all-around cycling performance
Bontrager Solaris Women's Shorts
$49.99
- Cirra inForm BioDynamic Chamois - women's dimension-optimized cycling pad - Profila Power compressive technology fights muscle fatigue - Clean cut compression leg gripper - Reflective elements enhance visibility for maximum safety anytime - 9" (23cm) inseam - Fitted - Streamlined fit for all-around cycling performance
Craft Cool Mesh Superlight SL
$29.99 $49.99 40% Off
- Superlight Mesh top with big-hole design for superior ventilation/cooling. - Mesh with big-hole construction for super ventilation and cooling - Ergonomic fit for optimal freedom of movement - Excellent moisture transport - Soft and comfortable fit - Full lightweight mesh Fabric: 95% Polyester / 5% Elastane
Bontrager B2 Windshell Long Sleeve Baselayer
$56.99 $94.99 40% Off
Stay warm and dry in windy weather with the B2 Windshell Long Sleeve Baselayer. Ride confidently knowing your critical first layer is helping protect you from the elements.
Bontrager B2 Long Sleeve Baselayer - Women's
$50.99 $84.99 40% Off
Stay warm and dry with Bontrager's B2 Long Sleeve baselayer. The polyester and wool blend creates an ideal first layer for those cool autumn rides. • Profila Dry powered by 37.5 technology and Merino Wool on back and arms provides a great balance between moisture transfer and warmth when wet in mild, variable conditions • Conditions-appropriate tuckable length • 3-inch (8cm) drop tail for a precise on-bike fit • Fitted: Streamlined fit for all-around cycling performance
Gore Wear Base Layer Windstopper Shirt
$37.99 - $45.59 $75.99 Up to 50% Off
Gore's Base Layers are made of a light moisture-transferring fabric with non-chafing flatlock seams and an anatomic cut for excellent comfort and freedom of movement. The WS boasts Gore's Windstopper panels for additional weather protection. • Elastic WINDSTOPPER insert on front, over shoulders and on kidney area • Thin and soft fabric • Minimized seams for less chafing • Flat-lock seams • Extra-long back • Reflective logo on front • 170 gr (Size L) • MAIN FABRIC: 100% Polyester with a WINDSTOPPER Membrane • STRETCH: 88% Polypropylene, 8% Elastane, 4% Polyamide
Craft Cool Mesh Superlight SS Base Layer
$32.99 $54.99 40% Off
Craft's Superlight Mesh top features big-hole design for superior ventilation and cooling. - Multi-channel, hollow, polyester filament fabric - Fibers channel moisture away from the body - Antimicrobial treatment to prevent fabric odor - Ergonomic fit
Pearl Izumi Men's SELECT Liner Shorts
$50.00
Pearl Izumi has outfitted this liner with their high quality SELECT Escape 1:1 Chamois, so you will no longer have to decide between the comfort of traditional bike shorts or the added breathability of a liner. The smooth-face mesh fabric used throughout the shorts body helps the liner move smoothly under your shell layer for unrestricted pedaling. - SELECT Escape 1:1 Chamois provides optimal moisture transfer and odor resistance - Updated pattern contours to the body for optimal fit when riding - Transfer Mesh fabric on main body prevents overheating while wearing shell shorts - Transfer fabric on lower legs is designed to allow shell shorts to move without friction during pedaling - Wide waistband provides comfort without extra pressure Main: 80% polyester, 20% elastane; Legs: 88% nylon, 12% LYCRA; Garment Weight (Size M): 120g
Louis Garneau 2004 Pants
$39.99
When practicing winter sports, wearing a very thin first layer of clothing that allows moisture to be evacuated is ideal. The 2004 pants are a perfect base layer to keep you dry all winter. Antibacterial and anti-odor properties make them an ideal complement to the warmer clothes you are wearing over it. The Drytex 2004 fabric dries very quickly to ensure maximum comfort before and during your training session. In addition, if you stop to take a break in a cabin before heading back out into the woods, you'll still be warm and dry to enjoy the rest of your day. - Drytex 2004 Fabric: 4-way stretchable peach skin fabric that increases air circulation and moisture wicking - Antibacterial treatment offering freshness and comfort - Modesty panel - Flatlock seams - Reflective accents - Elastic waist
Gore Wear Base Layer Windstopper Lady Shirt
$45.59 $75.99 40% Off
Gore's Base Layers are made of a light moisture-transferring fabric with non-chafing flatlock seams and an anatomic cut for excellent comfort and freedom of movement. The WS boasts Gore's Windstopper panels for additional weather protection. • Elastic WINDSTOPPER insert on front, over shoulders and on kidney area • Thin and soft fabric • Minimized seams for less chafing • Flat-lock seams • Extra-long back • Reflective logo on front • 128 gr (Size 38) • MAIN FABRIC: 100% Polyester with a WINDSTOPPER Membrane • STRETCH: 88% Polypropylene, 8% Elastane, 4% Polyamide
2XU Tri Bra
$79.95
2XU's supportive Tri Bra features SBR Skin X fabric for support, moisture management, and flexibility. Added benefits include UV and chlorine protection to keep you safe in the sun. 2XU's Sensor Mesh X fabric enhances ventilation and a slip-free racer back design keeps it securely in place. • Slip-free straps with racer back design • High impact inner support • SBR Skin X • Sensor Mesh X
Bontrager B1 Sleeveless Baselayer
$20.99 $34.99 40% Off
Even warmer rides can benefit from the right baselayer. Bontrager's lightest weight baselayer fabric, B1, is a comfortable first layer of Profila Cool fabric enhanced with 37.5 technology that regulates the body’s relative humidity to maintain ideal core temperature, allowing greater on-bike performance. Comfortably fits under every jersey you own. Key features: - Profila Cool fabric powered by 37.5 active particle technology - Conditions-appropriate, tuckable length - Drop tail for a precise on-bike fit - Fitted cut provides streamlined body fit for enhanced performance
Endura Transrib Shortsleeve Baselayer
$26.99 $44.99 40% Off
CoolMax ribbed knit makes Endura's Transrib Shortsleeve Baselayer an insulating layer in the winter, while its superior moisture management keeps you cool come summertime. Regardless of when you ride, the antibacterial finish on this baselayer will keep you feeling fresh. And, this snug, high-stretch top fits seamlessly beneath any jersey.
Fox Racing Evolution Short Liner
$54.95
When it comes to happy riding, comfort is king. The Evo liner short offers the same performance and comfort features of the Evo Sport bib but without the shoulder straps. The multi-panel poly/spandex tech body provides infinite stretch and rebound for an ergonomic and comfortable fit. The proven Fox Comp Chamois offers triple density padding and a 4-way stretch that moves with your body to eliminate hot spots and chafing. Compression leg bands keep everything secure, so the shorts don't ride up. TECHNICAL DETAILS - Polyester spandex main body fabric - Built with Fox's Comp chamois for long distance comfort - Custom jacquard Fox waistband - Silicone leg gripper prevent ride up COMP CHAMOIS: The combination of triple density foam, 4-way stretch construction and our top of the line EIT carbonium anti-microbial fabric makes this one of the most comfortable long-distance pads on the market.
KETL Liner Short
$115.00
As the seasons change and the mercury starts to boil, we tend to take a different approach to our attire on the bike. Less is more. Lighter, more breathable fabrics are a must. Moisture management is key. A good liner short is crucial. Ours is crafted using lightweight, breathable Italian fabric and is designed to be worn under an overshort. It offers just the right amount of compression without being too constricting and features a soft, comfortable waistband that moves with you. -Lightweight, breathable, compressive Italian fabric -Soft and comfortable flat rear waistband -Multi-density EIT mountain-bike-specific chamois -Wide, comfortable leg bands that grip without pinching -Sizes S–XXL
Pearl Izumi Men's Cargo Liner Shorts
$70.00
Engineered to deliver friction free pedaling, performance, and phenomenal breathability, the Pearl Izumi Men's Cargo Liner Shorts are a must have for serious trail riders. Smooth fabric on the front of the thighs allows the liner to slide easily beneath your shell shorts and the Transfer Mesh main body delivers unbelievable breathability. Thigh pockets near the leg openings can conveniently stash your food, ID, money, or tools. And they are easy to access by flipping up the bottom of your shell short. The superior ELITE Escape 1:1 Chamois takes your saddle comfort to a whole new level. Features: - New Transfer Mesh body fabric provides an amazing next-to-skin feel - Smooth fabric across the front of the legs slides easily under shell shorts and ensures a friction-free pedaling experience - Optimized with the superior ELITE Escape 1:1 Chamois - Two thigh pockets for carrying ride essentials - 10” inseam
Pearl Izumi Women's Transfer Wool Short Sleeve Base Layer
$80.00
Pearl's Transfer Wool Short Sleeve Base Layer is the best piece to have next to your skin as part of a layering system for riding in damp or wet conditions. This baselayer combines high quality Merino wool and moisture-wicking polyester in a strategic blend for exceptional performance. Its cycling specific shape, thumb loops if you need to seal in the warmth, and soft merrow seams create a comfortable foundation for cold weather and changing conditions. • P.R.O. Transfer Dry Merino provides optimal moisture transfer, dry time and odor absorption • Cycling specific fit with rotated sleeve construction • All–season versatility • Anatomic ‘close–to–body’ fit
Craft Active Windstopper Crew Neck LS Base Layer
$85.00
Craft's Windstopper Long Sleeve Crew features Gore Windstopper Piuma 4-way-stretch fabric in the chest and keeps the core warm by blocking wind. • Gore Windstopper Piuma four-way-stretch fabric • Windstopper windblock front • Pro Zero Fabric • Flat Lock Stitching • Drop Tail • Unisex (sizing based on Men's) • Machine washable and dryable
Pearl Izumi Women's Cargo Baselayer
$60.00
A full mesh baselayer designed to carry ride essentials under a jersey, with Pearl's patented anatomic Speed Sleeve construction to deliver a cycling-specific fit and support your load comfortably through your shoulders. - Direct-Vent mesh fabric for optimal moisture transfer and cooling - Patented anatomic Speed Sleeve design provides anatomically contoured fit in the cycling position, plus spreads the weight of pocket cargo across your shoulders - Three back pockets allow close-to-body storage without bouncing
Pearl Izumi Men's Cargo Base Layer
$60.00
A full mesh baselayer designed to carry ride essentials under a jersey, with Pearl's patented anatomic Speed Sleeve construction to deliver a cycling-specific fit and support your load comfortably through your shoulders. - Direct-Vent mesh fabric for optimal moisture transfer and cooling - Patented anatomic Speed Sleeve design provides anatomically contoured fit in the cycling position, plus spreads the weight of pocket cargo across your shoulders - Three back pockets allow close-to-body storage without bouncing
Pearl Izumi Women's Transfer Short Sleeve Base Layer
$50.00
This women’s specific summer weight cycling baselayer is designed to keep you cool and comfortable even on hot days. Transfer fabric facilitates the evaporative process by rapidly moving moisture away from your skin to outer layers. In back, mesh panels maximize ventilation. Patented Speed Sleeve anatomic construction hugs the contours of your shoulders, providing a second-skin fit when in the bent-over riding positing. Wear this short sleeve baselayer under a short sleeve jersey during the heat of summer, and then add it to your cool weather layering system during chillier months. - P.R.O. Transfer Dry fabric provides optimal moisture transfer for quick dry performance - Patented anatomic Speed Sleeve construction for best shoulder fit in the cycling position - Cycling specific, close to body, anatomic fit - Soft merrow seams for next to body comfort - Front Panel: 100% polyester  - Back Panel: 100% polyester - Stretch Panel on shoulders: 80% polyester, 20% elastane  - Garment Weight (Size M): 81 g
Pearl Izumi Women's Transfer Sleeveless Base Layer
$45.00
This women’s specific summer weight cycling baselayer is designed to keep you cool and comfortable even on hot days. P.R.O. Transfer fabric facilitates the evaporative process by rapidly moving moisture away from your skin to outer layers. In back, mesh panels maximize ventilation. Wear this sleeveless baselayer under a short sleeve jersey during the heat of summer, and then add it to your cool weather layering system during chillier months. - P.R.O. Transfer Dry fabric provides optimal moisture transfer for quick dry performance - Cycling specific, close to body, anatomic fit - Soft merrow seams for next to body comfort - Front Panel: 100% polyester - Back Panel: 100% polyester - Garment Weight (Size M): 64 g
KETL Liner Short
$115.00
As the seasons change and the mercury starts to boil, we tend to take a different approach to our attire on the bike. Less is more. Lighter, more breathable fabrics are a must. Moisture management is key. A good liner short is crucial. Ours is crafted using lightweight, breathable Italian fabric and is designed to be worn under an overshort. It offers just the right amount of compression without being too constricting and features a soft, comfortable waistband that moves with you. -Lightweight, breathable, compressive Italian fabric -Soft and comfortable flat rear waistband -Multi-density EIT mountain-bike-specific chamois -Wide, comfortable leg bands that grip without pinching -Sizes XS–XL
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