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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.

Troy Lee Designs Women's Premium Short Inner Liner
$70.00
Premium Women's Carbon Liner MTB Shorts With the addition of the TMF 6-hour chamois pad, the Women's Premium Carbon Liner MTB Shorts take the next step in providing industry-leading sweat and shock absorption. Together with the four-way stretch mesh main body and flat seams construction, this is the new pinnacle in all-day performance and comfort. - 81% Polyester/19% Elastane construction with a made in Italy TMF 6 hour carbon fiber strand pad - Custom wide elastic waist band with TLD signature logo for excellent comfort - Premium four-way stretch mesh main fabric for highest level of breathability - Flat seams inside and out allow for comfy, compression fit - 3" compression leg cuff with custom silicone gripper print - 9" inseam
Troy Lee Designs MTB Pro Short Inner Liner
$59.00
Add the MTB Pro Short Liner to any of your favorite TLD shorts to get all-day comfort on your rides. With the addition of the TMF 6-hour chamois pad, the MTB Pro Short Liner takes the next step in providing industry-leading sweat and shock absorption. Together with the four-way stretch mesh main body and flat seams construction, this is the new pinnacle in all-day performance and comfort. - 81% Polyester/19% Elastane construction with a made in Italy TMF 6 hour carbon fiber strand pad - Custom wide elastic waist band with TLD signature logo for excellent comfort - Premium four-way stretch mesh main fabric for highest level of breathability - Flat seams inside and out allow for comfy, compression fit - 3" compression leg cuff with custom silicone gripper print - 9" inseam
Garneau 2004 Pants
$31.49 $44.99 30% Off
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
Garneau Cycling Inner Shorts
$41.99 - $59.99 $59.99 Up to 30% Off
Technical Details - Fit Tech: Standard - Fabric: Lightsens: Stretchable, light, breathable and quick-drying fabric - Inner Technology: Removable chamois - Chamois: Airsport - Inseam: 9.5" / 24cm - Leg Finish: Powerband at thighs - Waist: Embossed elastic at waist
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.
Fox Racing Baseframe Pro Short Sleeve Base Layer
$209.95
Low-profile sleeveless baselayer guard The Baseframe Pro Short Sleeve is a breathable baselayer with built in guards on the shoulder. It's designed to be worn under your jersey for low-profile coverage. It includes a removeable back insert, increasing your impact protection, while the fabric wicks away sweat as you ride and keeps you cool. The Baseframe Pro will fit snug and secure—the polymer softens to conform to your body as it is warmed by your own heat—offering minimal restrictions and maximum benefit. The more you ride, the better it feels. - Exceeds EN1621-1 level 1 back certification including high and low temperature conditions - Removable CE certified D3O Viper back insert features world leading impact protection technology - Large perforation and flex grooves in the back foam contours and flexes with rider movement - EN1621-1 Level 1 D3O shoulder inserts for additional protection - Body heat activates (softens) the polymer to conform to body - Moisture wicking, open stretch mesh for breathability CERTIFICATIONS - Exceeds EN1621-1 level 1 back certification - EN1621-1 level 1 shoulder inserts for additional protection
Castelli Core Seamless Base Layer LS
$55.99 $79.98 30% Off
Time to give seamless base layers another try. Seamless construction promises stretch and comfort, but most base layers on the market have a nylon and Lycra mix that feels comfortable when you put it on but then ends up feeling wet when you're actually riding, and you freeze when you stop. We've worked hard to make this Core Seamless base layer keep you warm and dry, thanks to the addition of polypropylene and polyester yarns, while not compromising the stretch comfort of seamless. We think we've found the sweet spot that also provides a nice level of warmth for cool to cold days. - 84% polyester / 16% polypropylene yarns provide soft, warm wicking and exceptional stretch fit - Seamless construction means extra comfort - Lighter weight on side and back - Wide neck opening to fit under short-collared jerseys
Castelli Prosecco Tech W Long Sleeve
$62.99 $89.99 30% Off
The first goal of this base layer is to move moisture away from your skin while adding minimal insulation for those cool days when your riding intensity is high enough and your outer layers are warm enough. The areas covered by the bibtight around the waist and up the back can get hot, so we used a lightweight PrimaLoft fabric to help even out the temperature. This baselayer works best when in contact with the skin, so both fabrics are very stretchy and the cut is slim. On extremely cold days we'll use this as a first layer under a Flanders Warm second base layer, or under a thermal jersey. It's very effective at moving sweat away from the body. - Proprietary stretch rib knit 100% polyester main body fabric with Prosecco hydrophilic treatment for maximum wicking - PrimaLoft panels at waist and back where bibtight covers the upper body, to reduce uneven insulation - Crew neck closure to fit under short-collared jerseys
100% Crux Men's Liner Short
$49.00
- Polyester/elastane quick dry, anti-microbial mesh - Brushed logo elastic waistband for comfort - Flat-locked seams maximize comfort while minimizing chaffing - Premium Cytech chamois for best performance
Terry Terry Cyclo Brief 2.0
$59.95
The ideal solution for riding in your regular clothing. For 2022, Terry completely redesigned the Cyclo Brief using new fabrics and a more abbreviated approach. You'll find it to be very lightweight and breathable thanks to perforated nylon/spandex with a soft elastic waistband, and raw cut legs that will disappear under tight bottoms. - 90% nylon/10% spandex - Laser cut leg openings - Perforated fabric for increased breathability - Low profile, soft, debossed elastic waistband won't add bulk for layering - Reticulated chamois - Reticulated foam technology, creating a pad that's significantly thinner and lighter, more - Breathable and ideal for indoor conditions. - Breathable - Moisture Wicking - Antimicrobial Reticulated Chamois: Uses reticulated foam technology, creating a pad that's significantly thinner and lighter, more breathable, and ideal for indoor conditions. Narrower, seamless, 4-way stretch Elastic Interface Technology chamois with Terry's innovative soft wing construction; antimicrobial cover. Made in Italy.
Terry Terry Mixie Liner
$52.95
The Mixie Liner is a novel under-skirt, under-short garment that instantly transforms streetwear into cyclewear. Outfitted with Terry's Urban chamois, it's ideal for rides of 1-2 hours. Available in distinctive prints, the Mixie coordinates beautifully with the Terry Mixie Skirt. - 90% nylon/10% spandex - 4-panel fit - soft, exposed, elastic waistband - enclosed elastic leg band - Urban Chamois—Shorter front-to-back and less bulky for riding in a more upright commuter position. - Breathable - Moisture Wicking - 5-inch inseam
Terry Terry Performance Liner
$79.95
The Terry Performance Short Liner is designed for more serious cycling uses. Outfitted with the premium Flex Air chamois and made of mesh, it's a great option to pair up with any bottom. - 75% nylon/25% spandex mesh - 1 3/4 inch soft, debossed elastic at waist and legs - flat-seam construction reduces the potential for chafing -  silicone chain grip on inside leg bands adheres without binding - Flex Air Chamois with soft wing technology & perforated foam for breathability - 6.75 inch inseam - Breathable - Moisture Wicking
Terry Universal Liner
$39.95
Adding a Terry Universal Liner under skirts, dresses or any pair of shorts turns almost anything into bikewear. Outfitted with Terry's Urban chamois, ideal for rides of 1-2 hours. Urban Chamois: Compact size, seamless chamois with 4-way stretch Elastic Interface Technology and multi-level foam padding. Shorter front-to-back and less bulky for riding in a more upright commuter position. Light microfiber fabric and soft wing construction reduce bulk at the inner thigh to avoid chafing. Made in Italy. - Nylon/spandex mesh - 4-panel construction - Gentle waist and leg elastic bands - 6.5-inch inseam - Urban Chamois
RaceFace Flank Liner Shorts
$106.00
- Removable D30 high-performance shock absorbing protective foam at hips - Butterfly mesh throughout ensures a second skin fit to keep targeted hip protection in place - Highly durable mesh panels at inner thigh ensure maximum venting - Custom heat-moulded foam at outer thighs offers additional protection against knocks and bumps - Flatlock seam finish ensures mobility and comfort through the rider's full range of motion - High performance, Italian-made chamois with triple-density foam, rapid sweat absorption technology, anti-bacterial properties, and Eschler top fabric - Soft brushed Boxer Style elastic waistband - Custom elastic leg hem holds the short in place - Inner lower leg opening features 'slip panel' designed to glide over protection
RaceFace Stash Storage Liner Bib
$83.00
The STASH collection was developed for the growing number of riders trending away from using full hydration packs (especially on shorter rides) but still wanting the convenience of carrying items in a secured, balanced location. This new category offers a combination of storage core layers: tank, liner and bib. STASH gives riders the option to carry a bladder, spare tube, tool, pump, snacks, etc without having to wear a traditional pocketed XC jersey. - Fabric is a four-way stretch ultra-breathable mesh - Flatlock stitching throughout - STASH back pocket system - TMF Italian-made chamois with anti-bacterial technology - Left and right leg stash pockets - Silicone gripper at leg cuff opening - Laser-cut sublimated leg cuffs
Pearl Izumi Men's Cargo Bib Liner Shorts
$110.00
Many experienced riders have opted for the comfort of road bibs under shell shorts for years. They prefer the feel of a bib, but road shorts are not made to be covered with a durable shell short, and the combination can be warmer than ideal. Enter Pearl Izumi's Cargo Bib Liner Short, which not only improves ventilation versus traditional road shorts, but also adds integrated storage with three rear jersey-type pockets and two lower pockets on the thigh for trail essentials, like water, tools, and spare tubes. The superior ELITE Escape 1:1 Chamois takes saddle comfort to a whole new level. With this ultimate bib liner you can ditch your hydration pack for all but your longest rides. 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 superior ELITE Escape 1:1 Chamois - Three pockets on the lower back of the bib, and two thigh pockets for carrying ride essentials - 10” inseam
Pearl Izumi Men's Cargo Liner Shorts
$75.00
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 Men's Merino Baselayer
$80.00
This highly technical base layer delivers true sustainable performance. You've never worn a Merino base layer like this. We use a unique fabric construction method to place polyester fibers against your skin to improve wicking, and Merino facing the jersey for temperature regulation and odor control. The 18.5-micron Merino is responsibly sourced while the polyester is spun from recycled water bottles. The polyester also increases the base layer’s durability. The short sleeves feature a set-in construction for a versatile next-to-skin form fit. - Transfer Merino fabric combines wool and recycled polyester for sustainable technical performance. - Unique plated fabric construction places polyester next to skin and merino on the exterior for superior moisture transfer and thermal regulation. - Made using fine 18.5-micron merino wool for superior comfort. - Recycled Repreve XS Polyester technical fibers are made from recycled plastic water bottles. - Set in sleeve construction for easy layering and versatility. - Wool Blend Performance certified by the Woolmark Company to ensure the highest quality product.
Pearl Izumi Men's Merino Long Sleeve Baselayer
$90.00
This highly technical base layer delivers true sustainable performance. The key to staying comfortable on cold days is staying dry. We used a construction method called plating to place recycled polyester technical fibers next to skin on our responsibly sourced Merino wool, long-sleeve base layer. By putting polyester next to the rider’s skin, it transports moisture away to the Merino layer where it can evaporate even as the wool acts as insulation. The base layer uses a set-in sleeve design for a versatile form-following fit to make layering easy. - Transfer Merino fabric combines wool and recycled polyester for sustainable technical performance. - Unique plated fabric construction places polyester next to skin and merino on the exterior for superior moisture transfer and thermal regulation. - Made using fine 18.5-micron merino wool for superior comfort. - Recycled Repreve XS Polyester technical fibers are made from recycled plastic water bottles. - Set in sleeve construction for easy layering and versatility. - Wool Blend Performance certified by the Woolmark Company to ensure the highest quality product.
Pearl Izumi Men's Merino Thermal Long Sleeve Baselayer
$110.00
This is our heaviest base layer, at 250g/m2. It combines our 18.5-micron responsibly sourced Merino and recycled polyester technical fibers in a remarkable construction that positions the polyester next to your skin for maximum wicking while the wool faces out for superior insulation. With its long sleeves it is the ideal garment to layer beneath one of our AmFIB jackets. Thumb loops keep the sleeves in place as you pull on your jersey. - Mid-weight Transfer Merino fabric combines wool and recycled polyester for sustainable technical performance. - Unique plated fabric construction places polyester next to skin and merino on the exterior for superior moisture transfer and thermal regulation. - Made using fine 18.5-micron merino wool for superior comfort. - Recycled Repreve XS Polyester technical fibers are made from recycled plastic water bottles. - Set in sleeve construction for easy layering and versatility.
Pearl Izumi Minimal Liner Short
$40.00
When you go by bike, some rides call for just a bit of cushion without the bulk of a standard cycling short. That' where the Minimal Liner Short comes in. Think of it as an upgraded pair of boxer briefs with our slim and breathable Versa chamois. This is your go-to liner for hot laps on your favorite trail, a day of lift access shredding, or your daily commute.
Pearl Izumi Transfer Mesh Short Sleeve Baselayer
$65.00
The perfect foundation to any high-performance kit. This Men's Transfer Mesh Short Sleeve Baselayer is designed to regulate body temperature through moisture control to keep you riding in comfort across a broad temperature range. The airy, high-stretch PRO Transfer Mesh fabric is enhanced with In-R-Cool ® to improve thermoregulation and keep you cooler and dryer. GoFresh™â„¢ keeps the funk at bay and even allows this piece to be worn multiple times between washes, so you'll never have to ride without. Wear this baselayer on its own for the trainer, under a short sleeve jersey during the heat of summer, and then add it to your layering system in the spring or fall months for an additional layer of insulation. FEATURES - Pedal to Zero™: Going by bike 10mi / 17km offsets the climate impact of this garment - PRO Transfer Mesh fabric is highly breathable and quick drying - Sweat-activated In-R-Cool® technology improves thermal regulation - GoFresh™ anti-odor technology, bluesign® approved - Designed for all-day performance from chilly starts to hot finishes - Form fit
Pearl Izumi Transfer Mesh Sleeveless Baselayer
$55.00
The perfect foundation to any high-performance kit. This Men's Transfer Mesh Sleeveless Baselayer is designed to regulate body temperature through moisture control to keep you riding in comfort across a broad temperature range. The airy high-stretch PRO Transfer Mesh fabric is enhanced with In-R-Cool® to improve thermoregulation and keep you cooler and dryer. GoFresh™ keeps the funk at bay and even allows this piece to be worn multiple times between washes. Wear this baselayer on its own for the trainer, under a short sleeve jersey during the heat of summer, and then add it to your layering system in the spring or fall months for an additional layer of insulation.
Pearl Izumi Women's Cargo Liner Shorts
$75.00
Engineered to deliver friction free pedaling, performance, and phenomenal breathability, the Pearl Izumi Women'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 W 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 legs slides easily under shell shorts, providing a friction-free pedaling experience - Optimized with the superior W ELITE Escape 1:1 Chamois - Two thigh pockets for carrying ride essentials - 8” inseam
Pearl Izumi Women's Transfer Mesh Tank Top Baselayer
$55.00
The perfect foundation for any high-performance kit. This Women's Transfer Mesh Tank Baselayer is designed to regulate body temperature through moisture control to keep you riding in comfort across a broad temperature range. The airy high-stretch PRO Transfer Mesh fabric is enhanced with In-R-Cool to improve thermoregulation and keep you cooler and dryer. GoFresh keeps the funk at bay and even allows this piece to be worn multiple times between washes. Wear this baselayer on its own for the trainer, under a short sleeve jersey during the heat of summer, and then add it to your layering system in the spring or fall months for an additional layer of insulation. FEATURES - PRO Transfer Mesh fabric is highly breathable and quick drying - Sweat-activated In-R-Cool technology improves thermal regulation - GoFres anti-odor technology, bluesign approved - Designed for all-day performance from chilly starts to hot finishes - Form fit FABRIC - 64% recycled polyester, 26% polyester, 10% elastane Made in China *Model is 5'9" 125 lbs, wearing a Medium
Garneau Women's Cycling Inner Shorts
$59.99
Technical Details - Fit Tech: Standard - Fabric: Lightsens: Stretchable, light, breathable and quick-drying fabric - Inner Technology: Removable Chamois - Chamois: Airsport - Inseam: 8" / 20.5cm - Leg Finish: Powerband at thighs - Waist: Flattering HugFit waist, embossed elastic at waist
GORE C3 Liner Short Tights+
$60.00
A liner designed to provide all the comfort and breathability you need while riding, but giving you the freedom to wear your favorite overshort on the outside. This liner will get you to your destination with minimum sweat and maximum comfort. - Comfortable elastic waistband - Loops at waistband for attaching to outer short - ACTIVE VARIOUS seat insert - Gripper elastic on bottom hem - Mesh inserts for better ventilation
GORE C3 Women Liner Short Tights+
$60.00
A liner designed to maximize riding comfort and breathability in a feminine fit, while still giving you the freedom to wear your favorite overshort on the outside. This liner will get you to your destination with minimum sweat and maximum comfort. - Comfortable elastic waistband - Loops at waistband for attaching to outer short - ACTIVE VARIOUS women's seat insert - Gripper elastic on bottom hem - Mesh inserts for better ventilation
GORE C5 Liner Short Tights+
$90.00
A liner short designed for the serious rider. Minimal but durable padding is placed exactly where you need it, reducing bulk while maintaining comfort. Pair this liner with your favorite overshort for all-day comfort on the trail//bike. - Comfortable elastic waistband - GORE WINDSTOPPER Cup Technology - ADVANCED MTB seat insert - Gripper elastic on bottom hem - Mesh inserts for better ventilation
GORE M Base Layer Shirt
$55.00 - $60.00
Essential for cycling, running and outdoor adventures, this base layer will enhance your comfort throughout the day by aiding moisture management. Keeping the sweat off your skin will keep you cool on the way up & prevent wind chill on the way down. - Extra-long back - Quick dry - Next-to-skin comfort - Minimized seams - High-stretch material enables close fit with maximum comfort - Great moisture management - Thin and soft fabric - Flat-lock seams
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