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(1,532 products)Products (1532)
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- SeirusHeatwave All Season Reversible Long-Sleeve Base Layer Top - Women's$36.83Save 50%compared to $75.00
- Helly HansenLifa Merino Midweight Graphic Base Layer Top - Women'sTop Rated$79.73 - $82.73Save 24% - 27%compared to $110.00REI OUTLET
- Terramar2.0 Cloud Nine Midweight Performance Base Layer Scoop Shirt - Women's$29.73Save 33%compared to $45.00REI OUTLET
- Kari TraaEdith Long-Sleeve Base Layer Top - Women's$74.73Save 25%compared to $100.00REI OUTLET
- Arms of Andes300 Alpaca Wool Long-Sleeve Crew Base Layer Top - Men's$130.00 - $140.00
- SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's$92.73Save 28%compared to $130.00REI OUTLET
- SmartwoolIntraknit Thermal Merino Pattern Crew Base Layer Top - Women's$96.73Save 25%compared to $130.00REI OUTLET
- ArtilectDarkhorse 185 Zoned Crew Base Layer Top - Men'sTop Rated$109.73Save 31%compared to $160.00REI OUTLET
- IcebreakerMerino 200 Oasis Long-Sleeve Crewe Macro Forms Base Layer Top - Women's$85.73Save 25%compared to $115.00REI OUTLET
- REI Co-opSwiftland Running T-Shirt - Women'sTop Rated$39.95
- Helly HansenLIFA Merino Midweight Balaclava Base Layer Hoodie - Women's$104.73Save 30%compared to $150.00REI OUTLET
- Kari TraaLucie Half-Zip Base Layer Top - Women's$67.73Save 24%compared to $90.00REI OUTLET
- Kari TraaRose Base Layer Hoodie - Women's$97.73Save 24%compared to $130.00REI OUTLET
- Kari TraaEmbla Wool Long-Sleeve Base Layer Top - Women's$90.00
- Helly HansenLIFA ACTIVE Graphic Crew Base Layer Top - Women's$42.73Save 34%compared to $65.00REI OUTLET
- ArtilectFlatiron 185 Quarter-Zip Base Layer Top - Women's$99.73Save 37%compared to $160.00REI OUTLET
- Ortovox120 Comp Light Base Layer Hoody - Men's$120.00
- Icebreaker200 Oasis Sonebula Long-Sleeve Crewe Base Layer Top - Women's$89.73Save 25%compared to $120.00REI OUTLET
- ColumbiaPFG Uncharted Neps Long-Sleeve Shirt - Men's$26.83Save 51%compared to $55.00
- Picture Organic ClothingNangha Base Layer Top - Men's$44.83Save 50%compared to $90.00
- Helly HansenLIFA Merino Midweight Graphic Base Layer Crew Top - Women's$110.00 - $115.00
- Arms of Andes300 Lightweight Alpaca Wool Pullover Base Layer Hoodie - Women's$140.00
- SmartwoolClassic Thermal Merino Colorblock Crew Base Layer Top - Women's$130.00
- PatagoniaP-6 Logo T-Shirt - Kids'$23.93Save 31%compared to $35.00
- Hot ChillysOriginals Solid Base Layer Crew - Kids'$34.73Save 26%compared to $47.50REI OUTLET
- ArtilectFlatiron 185 Crew Base Layer Top - Men's$96.73 - $109.73Save 30% - 31%compared to $140.00 - $160.00REI OUTLET
- Ortovox230 Competition Long-Sleeve Base Layer Top - Men's$110.00
- Kari TraaAlma Half-Zip Base Layer Top - Women's$59.73Save 25%compared to $80.00REI OUTLET
- IcebreakerMerino 260 Vertex Long-Sleeve Crewe Thermal Base Layer Top - Women's$99.73Save 28%compared to $140.00REI OUTLET
- SmartwoolIntraknit Active Base Layer Crew Shirt - Women's$79.73Save 27%compared to $110.00REI OUTLET
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