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MADE IN USA DAY (7/2)
SAVE 50% on Aerostich Fleece Bags
At Aerostich, we're proud to design and manufacture our gear in the USA, and to celebrate, we're offering 50% off Fleece Bags for today and tomorrow only (while supplies last). Ends 11:59pm CST 7/2/2026.
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SAVE 10%-20%
4th of July Savings!
Don't miss out on savings on some of our most popular gear accessories and more.
4TH OF JULY BONUS
FREE Shipping
Orders of $150 or more will receive free shipping!
US Domestic ground shipping only. Ends 11:59pm CST 7/6/2026.
MADE IN USA DAY (7/2)
SAVE 50% on Aerostich Fleece Bags
At Aerostich, we're proud to design and manufacture our gear in the USA, and to celebrate, we're offering 50% off Fleece Bags for today and tomorrow only (while supplies last). Ends 11:59pm CST 7/2/2026.
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Base Layers
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Underwear
10 products
Bamboo
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Microfiber
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17 products
Stay warmer and drier with less bulk in these comfortable, lightweight base layers. Proprietary HeartR® fabric technology is integrated throughout the garments, creating additional heat by expanding and heating up when it comes into contact with your skin. Heating performance is part of the fabric and will not wash out. The anti-bacterial and advanced wicking synthetic fabric is soft and stretchable for all-day wear. Long sleeve crew neck top and bottoms both feature flat seams for added comfort, with the pants also using a slightly thinner fabric layer below the calf and gusset area for enhanced breathability and mobility. An ideal layer for temps from 0º to 75º F. 70% Polyester, 27% HEATR®, 3% Spandex. Black. Unisex Sizes XS-XL. Made in America
Stay warmer and drier with less bulk in these comfortable, lightweight base layers. Proprietary HeartR® fabric technology is integrated throughout the garments, creating additional heat by expanding and heating up when it comes into contact with your skin. Heating performance is part of the fabric and will not wash out. The anti-bacterial and advanced wicking synthetic fabric is soft and stretchable for all-day wear. Long sleeve crew neck top and bottoms both feature flat seams for added comfort, with the pants also using a slightly thinner fabric layer below the calf and gusset area for enhanced breathability and mobility. An ideal layer for temps from 0º to 75º F. 70% Polyester, 27% HEATR®, 3% Spandex. Black. Unisex Sizes XS-XL. Made in America
Specially engineered HEATR® fabric integrated into these base layers provide maximum warmth with less bulk by expanding to generate additional heat when in contact with your skin. Anti-microbial technology assists in destroying and inhibiting the growth of bacteria while simultaneously cutting down odor. Soft, stretchable fabric with flat seams for all-day comfort. Long sleeve shirt features ¼ zipper at neck for added venting comfort. The pants are body-mapped with thinner spandex in the gusset and calf area for ventilation and flexibility. For temps from -20º to 50º F. 70% Polyester, 27% HEATR®, 3% Spandex. Black. Sizes XS-XL. Made in America
Specially engineered HEATR® fabric integrated into these base layers provide maximum warmth with less bulk by expanding to generate additional heat when in contact with your skin. Anti-microbial technology assists in destroying and inhibiting the growth of bacteria while simultaneously cutting down odor. Soft, stretchable fabric with flat seams for all-day comfort. Long sleeve shirt features ¼ zipper at neck for added venting comfort. The pants are body-mapped with thinner spandex in the gusset and calf area for ventilation and flexibility. For temps from -20º to 50º F. 70% Polyester, 27% HEATR®, 3% Spandex. Black. Sizes XS-XL. Made in America
One of the best technology crossovers from bicycling to motorcycling is padded, stretchy shorts. If you’ve never worn these things on a long ride, you owe it to yourself to try a pair. They seem to add another couple hundred mile range to a day, as they keep fatigue at bay longer than yer basic briefs. These are a modified version of bicycle shorts, cut slightly shorter in the legs, and with all the Lycra and fleece of the originals. Put a stop to chafing, stay comfortable and keep riding! (Also an old Iron Butt rider’s secret weapon.) Black. S (24–28), M (28–32), L (32–36), XL (36–40).
Cooler and drier than cotton underwear, and perfect for multi-day trips. Designed for maximum next-to-the-skin comfort and microclimatic efficiency, this first-layer will keep you comfortable. Traps warm air next to your skin and allows moisture to be transported away Made of an advanced wicking fast-dry knit (dries three times faster than cotton). Wash out at night in any sink (they’ll be dry by morning) so you don’t have to pack as much stuff. Constructed with durable, comfortable flat seams, and shaped to eliminate bunching and wrinkling. An ideal first layer. Black. M–XL.
Merino wool is the finest, softest, itch-free wool available. This lightweight 160gsm jersey feels like every inch of that. It will keep you warm, yet won’t make you overheat. It’s versatile enough to wear as a primary, mid or under-layer and comfortable enough for lounging around the house. The neck is cut slightly higher for warmth. Machine washable. Stone or Black. 12 oz. M–XXL.
Luxuriously soft, moisture-wicking, 200gsm Merino wool makes a great foundation layer. Tailored with a contoured fit, all seams are sewn flat for comfort, and the collar and fly are double-stitched to keep out drafts. They wear great across a very broad temperature range. And dry overnight after motel sink washouts. Short Sleeve Top (off white or black) and Long Sleeve Top (black) available in M–XXL. Bottom (black) available in M(32-34), L(36-38), XL(40-42), XXL(44-46).
Luxuriously soft, moisture-wicking, 200gsm Merino wool makes a great foundation layer. Tailored with a contoured fit, all seams are sewn flat for comfort, and the collar and fly are double-stitched to keep out drafts. They wear great across a very broad temperature range. And dry overnight after motel sink washouts. Short Sleeve Top (off white or black) and Long Sleeve Top (black) available in M–XXL. Bottom (black) available in M(32-34), L(36-38), XL(40-42), XXL(44-46).
Luxuriously soft, moisture-wicking, 200gsm Merino wool makes a great foundation layer. Tailored with a contoured fit, all seams are sewn flat for comfort, and the collar and fly are double-stitched to keep out drafts. They wear great across a very broad temperature range. And dry overnight after motel sink washouts. Short Sleeve Top (off white or black) and Long Sleeve Top (black) available in M–XXL. Bottom (black) available in M(32-34), L(36-38), XL(40-42), XXL(44-46).
A great loose fit performance layer that features a flattering scoop neck with neat hem at neck and straight bottom opening. The Bamboo Performance Technology™ gives this natural temperature regulation, moisture wicking and anti-odor protection for everyday wear or under intense activity. UPF 50+ protection. 55% Organic Cotton/40% Viscose from Bamboo/5% Elastane. S-XL. Pink or Green.
There’s no arguing...women and men agree a Bamboo-Cotton ¼ Zip Jersey is must have kit for on and off the bike. It’s a great layering piece, light and soft, with a practical cut great for wearing under a button-up shirt on a cold day. Darn comfy on it’s own too. The women’s version is cut, well...a little more girly and more form fitting than the men’s, which is more straight patterned.
The ladies version has thumb-holes at the end of the sleeves too, which prevents the sleeves from bunching when suiting up and keeps cold drafts at bay, which is a nice touch (sorry guys...deal with it). Both sport a semi-lock zipper that stays in place, and of course all the benefits of bamboo fabric apply: Moisture wicking, anti-odor, natural temperature regulation, UPF 50+ protection and 4 way stretch. 55% Organic Cotton/40% Viscose from Bamboo/5% Elastane. Women’s S-XL, Men’s M-XXL. Black.
Eco-friendly high-tech bamboo fiber offers exceptional performance and long wearing comfort. Adaptive to your body temperature, bamboo fabric keeps you cooler in the Summer and warmer in the Winter. Advanced moisture wicking and natural anti-microbial properties combine for an odor-resistant garment. Also protects sensitive or allergy prone skin with hypoallergenic properties and has a high UV rating for sun protection. Long Sleeve ¼ Zip Shirt. Made from HYPERTECH™ Bamboo Mesh fabric: 52% Bamboo, 48% Polyester. Heather, White, Olive or Blue. Sizes S-XXL. Made in America
Eco-friendly high-tech bamboo fiber offers exceptional performance and long wearing comfort. Adaptive to your body temperature, bamboo fabric keeps you cooler in the Summer and warmer in the Winter. Advanced moisture wicking and natural anti-microbial properties combine for an odor-resistant garment. Also protects sensitive or allergy prone skin with hypoallergenic properties and has a high UV rating for sun protection. Choose from Long Sleeve ¼ Zip or loose fit Short Sleeve T-Shirt. Made from HYPERTECH™ Bamboo Mesh fabric: 52% Bamboo, 48% Polyester. Heather or Blue. Sizes S-XXL. Made in America
Microtech loose fit short sleeve v-neck shirt with a perfect blend of comfort and performance for all-day wear. Woven with advanced moisture wicking properties to insure you stay drier, the soft, lightweight fabric feels great against the skin. Use it as a base layer for under riding gear or simply wear it casually. Anti-Microbial properties help prevent odor and built in anti-snag technology insures this shirt will stay looking good. 100% performance Polyester. White or Pink. Women's XS-XL. Made in America
Specially engineered HEATR® fabric integrated into these base layers provide maximum warmth with less bulk by expanding to generate additional heat when in contact with your skin. Anti-microbial technology assists in destroying and inhibiting the growth of bacteria while simultaneously cutting down odor. Soft, stretchable fabric with flat seams for all-day comfort. Long sleeve shirt features ¼ zipper at neck for added venting comfort. The pants are body-mapped with thinner spandex in the gusset and calf area for ventilation and flexibility. For temps from -20º to 50º F. 70% Polyester, 27% HEATR®, 3% Spandex. Black. Sizes XS-XL. Made in America
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