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Base Layer
(428 products)Products (428)
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- PatagoniaCapilene Midweight Base Layer Bottoms - Men'sTop Rated$89.00
- REI Co-opMidweight Base Layer Bottoms - Kids'Top Rated$34.95
- REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Men's$49.83 - $99.95
- SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's$81.73Save 28%compared to  $115.00REI OUTLET
- REI Co-opLightweight Half-Zip Base Layer Top - Women's$44.95
- REI Co-opMerino 185 Base Layer Bottoms - Women's$79.95
- Icebreaker260 Merino Tech Thermal Leggings with Fly - Men'sTop Rated$125.00
- REI Co-opLightweight Base Layer Bottoms - Kids'Top Rated$29.95
- Icebreaker125 ZoneKnit Merino Long-Sleeve Crewe Thermal Top - Men'sTop Rated$93.73Save 25%compared to  $125.00REI OUTLET
- REI Co-opMerino 185 Base Layer Bottoms - Women's Plus Sizes$39.83 - $79.95
- PatagoniaCapilene Midweight Crew Base Layer Top - Men'sTop Rated$89.00
- SmartwoolIntraknit Thermal Merino Base Layer Quarter-Zip Top - Men'sTop Rated$69.83 - $140.00
- REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men'sTop Rated$62.93 - $89.95
- REI Co-opHeavyweight Merino Base Layer Half-Zip Top - Men's$49.83 - $104.95
- REI Co-opMerino 185 Base Layer Bottoms - Men's Tall Sizes$79.95
- REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Women'sTop Rated$44.83 - $89.95
- REI Co-opLightweight Crew Base Layer Top - Women's$29.95
- SmartwoolClassic Thermal Merino Crew Base Layer Top - Kids'$44.73Save 31%compared to  $65.00REI OUTLET
- REI Co-opMerino Midweight Base Layer Bottoms - Kids'Top Rated$49.95
- REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's Plus Sizes$55.93 - $79.95
- Kari TraaRose Half-Zip Base Layer Top - Women'sTop Rated$120.00
- SmartwoolClassic Thermal Merino Base Layer Bottoms - Kids'Top Rated$48.73Save 25%compared to  $65.00REI OUTLET
- CraftCore Dry Active Comfort Base Layer Pants - Men's$32.73Save 34%compared to  $49.95REI OUTLET
- Mountain HardwearMountain Stretch Base Layer Tights - Men's$46.73Save 37%compared to  $75.00REI OUTLET
- Arms of Andes160 Ultralight Alpaca Wool Base Layer Leggings - Men's$85.00
- Terramar3.0 Thermawool Crew Base Layer Top - Women's$49.73 - $52.73Save 24% - 28%compared to  $70.00REI OUTLET
- IcebreakerMerino 260 Tech Long-Sleeve Crewe Thermal Top - Men'sTop Rated$125.00
- Arc'teryxIonia Merino Wool Base Layer Hoody - Men'sTop Rated$140.00
- SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Women's$62.93 - $90.00
- REI Co-opLightweight Base Layer Tights - Women's Plus Sizes$9.83Save 75%compared to  $39.95
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