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Base Layers
(368 products)Products (368)
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- Arms of Andes300 Lightweight Alpaca Wool Half-Zip Base Layer Top - Women's$115.00 - $135.00
- IcebreakerMerino 200 ZoneKnit Long-Sleeve Half-Zip Thermal Base Layer Top - Women's$119.73Save 25%compared to  $160.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletREI OUTLET
- Terramar2.0 Cloud Nine Midweight Performance Base Layer Scoop Shirt - Women's$29.73Save 33%compared to  $45.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletREI OUTLET
- Free CountryForce Grid Fleece Base Layer Top - Men's$29.73Save 33%compared to  $45.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletREI OUTLET
- Kari TraaRose Light High-Waisted Base Layer Pants - Women's$82.73Save 24%compared to  $110.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletREI OUTLET
- The North FaceSummit Series Pro 120 Crew Base Layer Top - Women'sTop Rated$100.00
- SmartwoolIntraknit Active Base Layer Crew Shirt - Men's$81.73Save 25%compared to  $110.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletREI OUTLET
- Helly HansenHH LIFA Base Layer Set - Kids'$70.00
- Kari TraaKlara High-Waisted Base Layer Pants - Women's$62.73Save 30%compared to  $90.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletREI OUTLET
- Free CountryMicrotech Heat Base Layer Top - Men's$28.73Save 36%compared to  $45.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletREI OUTLET
- SmartwoolClassic All-Season Merino Quarter-Zip Base Layer Top - Women's$95.00
- Arms of Andes300 Lightweight Alpaca Wool Pullover Base Layer Hoodie - Women's$140.00
- Terramar2.0 Cloud Nine Midweight Performance Thermal Turtleneck - Women's$32.73Save 31%compared to  $48.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletREI OUTLET
- Arc'teryxRho LT Base Layer Bottoms - Men's$49.83 - $100.00
- REI Co-opMerino 185 Base Layer Top - Women's$48.93 - $69.95
- REI Co-opLightweight Crew Base Layer Top - Women'sTop Rated$29.95
- The North FaceFD Pro 160 Base Layer Tights - Women's$70.00
- REI Co-opMidweight Crew Base Layer Top - Toddlers'Top Rated$24.95
- Nani SwimwearUinta Base Layer Top - Women's$29.83Save 62%compared to  $80.00
- Helly HansenLifa Active Base Layer Bottoms - Women's$39.73Save 27%compared to  $55.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletREI OUTLET
- REI Co-opMidweight Base Layer Bottoms - Kids'Top Rated$34.95
- REI Co-opLightweight Half-Zip Base Layer Top - Men's$44.95
- The North FaceSummit Series Pro 120 Base Layer Tights - Women'sTop Rated$100.00
- Kari TraaFierce Base Layer Pants - Women's$39.73Save 39%compared to  $66.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletREI OUTLET
- Free CountryMicrotech Heat Cocaber Base Layer Bottoms - Women's$34.73Save 30%compared to  $50.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletREI OUTLET
- HalfdaysSophia Base Layer Leggings - Women's$49.83Save 41%compared to  $85.00
- Free CountryMicrotech Heat Base Layer Bottoms - Men's$31.73Save 29%compared to  $45.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletREI OUTLET
- BurtonMidweight Base Layer Pants - Women's$19.83Save 69%compared to  $64.95
- REI Co-opMidweight Base Layer Crew Top - Kids'Top Rated$34.95
- SmartwoolClassic All-Season Merino Base Layer Bottoms - Women's$90.00
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