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(353 products)Products (353)
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- REI Co-opMidweight Long-Sleeve Base Layer Top - Men'sTop Rated$26.83 - $54.95
- REI Co-opMidweight Base Layer Bottoms - Men'sTop Rated$54.95
- REI Co-opMidweight Base Layer Tights - Women's$54.95
- REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Women'sTop Rated$44.95
- REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Men's$49.83 - $99.95
- REI Co-opMidweight Long-Sleeve Base Layer Top - Women's$54.95
- REI Co-opHeavyweight Merino Base Layer Half-Zip Top - Men's$49.83 - $104.95
- SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Women's$77.83 - $150.00
- SmartwoolClassic Thermal Merino Crew Base Layer Top - Women'sTop Rated$59.83 - $125.00
- REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men'sTop Rated$44.83 - $89.95
- REI Co-opMidweight Base Layer Half-Zip Top - Men'sTop Rated$29.83 - $59.95
- REI Co-opMerino 185 Base Layer Bottoms - Men's$39.83 - $79.95
- SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Women's$53.83 - $100.00
- REI Co-opHeavyweight Merino Base Layer Half-Zip Top - Women'sTop Rated$51.83 - $104.95
- REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Men's$44.95
- SmartwoolClassic Thermal Merino Base Layer Hoodie - Men's$108.73Save 25%compared to $145.00Save up to 30% extra on your REI Outlet purchaseREI OUTLET
- REI Co-opLightweight Base Layer Tights - Women'sTop Rated$44.95
- REI Co-opMerino 185 Base Layer Top - Women's$69.95
- SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men'sTop Rated$53.83 - $100.00
- REI Co-opLightweight Base Layer Bottoms - Men'sTop Rated$44.95
- SmartwoolClassic All-Season Merino Base Layer Bottoms - Women's$68.83 - $100.00
- REI Co-opHeavyweight Merino Base Layer Bottoms - Women's$49.83 - $99.95
- SmartwoolClassic Thermal Merino Crew Base Layer Top - Men'sTop Rated$68.83 - $125.00
- SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's$125.00
- PatagoniaCapilene Midweight Crew Base Layer Top - Men'sTop Rated$43.83 - $89.00
- SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's Plus Sizes$68.83 - $125.00
- Helly HansenHH Durawool Base Layer T-Shirt - Women's$56.73Save 29%compared to $80.00Save up to 30% extra on your REI Outlet purchaseREI OUTLET
- SmartwoolClassic Thermal Merino Crew Base Layer Top - Kids'$48.73Save 18% - 25%compared to $60.00 - $65.00Save up to 30% extra on your REI Outlet purchaseREI OUTLET
- REI Co-opMidweight Base Layer Bottoms - Kids'Top Rated$25.93Save 25%compared to $34.95
- REI Co-opMerino 185 Base Layer Top - Men's$69.95
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