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Base Layers
(450 products)Products (450)
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- IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Women'sTop Rated$49.83 - $105.00
- Kari TraaEloise Base Layer Pants - Women'sNew arrival$52.73Save 24%compared to  $70.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- CraftCORE Dry Active Comfort Base Layer Top - Men's$39.73Save 38%compared to  $64.95Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- Arms of Andes160 Ultralight Alpaca Wool Base Layer Leggings - Men's$85.00
- Icebreaker260 ZoneKnit Base Layer Leggings - Men'sTop Rated$119.73Save 27%compared to  $165.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- SeirusHeatwave All Season Reversible Long-Sleeve Base Layer Top - Women's$36.83Save 50%compared to  $75.00
- Picture Organic ClothingNangha Base Layer Top - Men's$44.83Save 50%compared to  $90.00
- Kari TraaSmekker Base Layer Pants - Women's$83.73Save 30%compared to  $120.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- StioBasis PeakWool Midweight Base Layer Tights - Men'sNew arrival$139.00
- IcebreakerMerino 200 Oasis Base Layer Leggings with Fly - Men'sTop Rated$105.00
- Free CountryForce Grid Fleece Base Layer Top - Women's$34.73Save 36%compared to  $55.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- Ortovox230 Competition Zip-Neck Base Layer Top - Men's$59.83Save 50%compared to  $120.00
- PatagoniaCapilene Midweight Zip-Neck Base Layer Top - Men'sTop Rated$69.93 - $99.00
- Sale Ends Aug 28SpraywayEffra Hoody Base Layer Top - Women's$34.98Save 49%compared to  $69.95Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- Kari TraaRose Light Half-Zip Base Layer Top - Women's$89.73Save 25%compared to  $120.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- Arc'teryxRho Heavyweight Base Layer Bottoms - Men'sTop Rated$96.73Save 19%compared to  $120.00REI OUTLET
- Kari TraaFloke Base Layer Pants - Women's$64.73Save 35%compared to  $100.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- Kari TraaAlma Hood Base Layer Top - Women's$59.73Save 25%compared to  $80.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- Kari TraaSara Long-Sleeve Base Layer Top - Women'sNew arrival$74.73Save 25%compared to  $100.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- SmartwoolIntraknit Active Base Layer Crew Shirt - Men's$74.73Save 32%compared to  $110.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- Helly HansenLIFA Merino Midweight 2-In-1 Graphic Half-Zip Base Layer Top - Women's$86.73Save 27%compared to  $120.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- Sale Ends Aug 28SmartwoolIntraknit Active Base Layer Bottoms - Women's$55.00Save 50%compared to  $110.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- Sale Ends Aug 28CotopaxiLiso Base Layer Top - Men'sTop Rated$32.50Save 50%compared to  $65.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- Kari TraaAlma Base Layer Pants - Women's$52.73Save 24%compared to  $70.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- Sale Ends Aug 28ArtilectDarkhorse 185 Zoned Crew Base Layer Top - Women's$80.00Save 50%compared to  $160.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- Icebreaker200 ZoneKnit Merino Thermal Base Layer Leggings - Men's$109.73Save 26%compared to  $150.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- Kari TraaSmekker Long-Sleeve Base Layer Top - Women's$89.73Save 25%compared to  $120.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- Kari TraaVilma Half-Zip Base Layer Top - Women'sNew arrival$74.73Save 25%compared to  $100.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- Helly HansenLIFA ACTIVE Graphic Crew Base Layer Top - Women's$42.73Save 34%compared to  $65.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
- IcebreakerMerino 260 Tech Thermal Base Layer Leggings With Fly - Men'sTop Rated$93.73Save 25%compared to  $125.00Members use code LABORDAY2025 for an extra 20% off at REI OutletREI OUTLET
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