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Lightweight Underwear
(152 products)Products (152)
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- Arms of Andes160 Ultralight Alpaca Wool Base Layer Leggings - Men's$85.00
- Kari TraaEmbla Wool Base Layer Top - Women's$60.00
- Icebreaker125 ZoneKnit Base Layer Leggings - Men's$125.00
- Arms of Andes160 Ultralight Alpaca Wool Long-Sleeve Base Layer Shirt - Men's$85.00
- Kari TraaEmbla Wool Long-Sleeve Base Layer Top - Women's$80.00
- Arms of Andes160 Ultralight Alpaca Wool Crewneck Base Layer T-Shirt - Men's$75.00
- The North FaceSummit Series Pro 120 Base Layer Tights - Women'sTop Rated$100.00
- Arms of Andes160 Ultralight Alpaca Wool Long-Sleeve Base Layer Shirt - Women's$85.00 - $100.00
- Arms of Andes160 Ultralight Alpaca Wool Crew Neck Base Layer T-Shirt - Women's$75.00
- The North FaceSummit Series Pro 120 Crew Base Layer Top - Women'sTop Rated$100.00
- Helly HansenHH LIFA Base Layer Set - Kids'$70.00
- Kari TraaAlma Base Layer Pants - Women's$52.73Save 24%compared to  $70.00REI OUTLET
- Kari TraaAlma Hood Base Layer Top - Women's$59.73Save 25%compared to  $80.00REI OUTLET
- Icebreaker125 ZoneKnit Merino Thermal Leggings - Men's$93.73Save 25%compared to  $125.00REI OUTLET
- Kari TraaAlma Half-Zip Base Layer Top - Women's$59.73Save 25%compared to  $80.00REI OUTLET
- Icebreaker125 ZoneKnit Merino Long-Sleeve Crewe Thermal Top - Men'sTop Rated$93.73Save 25%compared to  $125.00REI OUTLET
- HalfdaysJohnson Base Layer Top - Women's$62.93Save 25%compared to  $85.00
- SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men'sTop Rated$66.93 - $90.00
- SmartwoolClassic All-Season Merino T-Shirt - Men's$80.00
- REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Men's$39.95
- REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's$55.93 - $79.95
- REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Women'sTop Rated$39.95
- REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's$55.93 - $79.95
- REI Co-opLightweight Crew Base Layer Top - Women's$29.95
- REI Co-opMerino 185 Base Layer Top - Women's$48.93 - $69.95
- SmartwoolClassic All-Season Merino Base Layer Bottoms - Men's$66.93 - $90.00
- REI Co-opMerino 185 Base Layer Bottoms - Women's$79.95
- REI Co-opMerino 185 Base Layer Bottoms - Men's$39.83 - $79.95
- REI Co-opLightweight Half-Zip Base Layer Top - Women's$44.95
- REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men'sTop Rated$62.93 - $89.95
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