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Base Layers
(375 products)Products (375)
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- Kari TraaFierce Base Layer Pants - Women's$39.73Save 33%compared to  $60.00REI OUTLET
- Free CountryForce Grid Fleece Crew Base Layer Top - Men'sTop Rated$31.73Save 29%compared to  $45.00REI OUTLET
- tasc PerformanceElevation Merino T-Shirt - Men's$49.73Save 37%compared to  $79.00REI OUTLET
- SmartwoolClassic Thermal Merino Lettuce Edge Crew Base Layer Top - Women's$82.73Save 28%compared to  $115.00REI OUTLET
- Sale Ends May 26REI Co-opSilk Liner Crew Socks - Seconds - 2 Pairs$22.73Save 32%compared to  $33.90REI OUTLET
- SmartwoolIntraknit Thermal Max Merino Base Layer Bottoms - Women's$100.73Save 25%compared to  $135.00REI OUTLET
- Sale Ends May 26Kari TraaFloke Base Layer Pants - Women's$69.73Save 30%compared to  $100.00REI OUTLET
- CotopaxiLiso Base Layer Top - Men'sTop Rated$48.73Save 25%compared to  $65.00REI OUTLET
- CraftActive Intensity Base Layer Pants - Men's$36.73Save 33%compared to  $54.95REI OUTLET
- ArtilectGoldhill 125 Zoned Crew Base Layer Top - Men's$89.73Save 30%compared to  $130.00REI OUTLET
- Free CountryForce Grid Fleece Base Layer Bottoms - Women's$34.73Save 36%compared to  $55.00REI OUTLET
- Sale Ends May 26Kari TraaRose Light Half-Zip Base Layer Top - Women's$83.73Save 30%compared to  $120.00REI OUTLET
- Terramar2.0 Ultra Merino Turtleneck Base Layer Top - Women's$52.73Save 29%compared to  $75.00REI OUTLET
- Terramar2.0 Cloud Nine Midweight Performance Base Layer Scoop Shirt - Women's$33.73Save 25%compared to  $45.00REI OUTLET
- Sale Ends May 26Kari TraaMalia Long-Sleeve Base Layer Top - Women's$48.73Save 30%compared to  $70.00REI OUTLET
- Free CountryForce Grid Fleece Base Layer Top - Women's$34.73Save 36%compared to  $55.00REI OUTLET
- Terramar2.0 Cloud Nine Midweight Performance Thermal Turtleneck - Women's$35.73Save 25%compared to  $48.00REI OUTLET
- Sale Ends May 26Kari TraaVoss Cashmere Mix Half-Zip Base Layer Top - Women's$125.73Save 30%compared to  $180.00REI OUTLET
- tasc PerformanceElevation Merino Base Layer Bottoms - Women's$49.73Save 37%compared to  $79.00REI OUTLET
- Helly HansenLIFA Merino Midweight 2-In-1 Base Layer Pants - Women's$74.73Save 25%compared to  $100.00REI OUTLET
- IcebreakerMerino 200 Sonebula Long-Sleeve High-Neck Base Layer Top - Men's$93.73Save 25%compared to  $125.00REI OUTLET
- Helly HansenLIFA Merino Midweight Graphic Base Layer Pants - Women's$82.73Save 24%compared to  $110.00REI OUTLET
- Club RideSkyline Keep Warm Cycling Quarter-Zip Base Layer - Men's$54.73Save 31%compared to  $79.95REI OUTLET
- SmartwoolIntraknit Thermal Merino Pattern Crew Base Layer Top - Men's$90.73Save 30%compared to  $130.00REI OUTLET
- ArtilectFlatiron 185 Base Layer Leggings - Men's$109.73Save 31%compared to  $160.00REI OUTLET
- SmartwoolClassic All Season Merino Long-Sleeve Base Layer Top - Men'sTop Rated$66.73Save 25%compared to  $90.00REI OUTLET
- Kari TraaFryd Base Layer Pants - Women's$32.73 - $37.73Save 37% - 40%compared to  $55.00 - $60.00REI OUTLET
- Terramar1.0 All-Season Lightweight Merino Wool T-Shirt - Women's$34.73Save 30%compared to  $50.00REI OUTLET
- IcebreakerMerino 260 Vertex Long-Sleeve Half-Zip Herenga Base Layer Top - Women's$99.73Save 33%compared to  $150.00REI OUTLET
- Icebreaker260 ZoneKnit Base Layer Leggings - Men'sTop Rated$119.73Save 27%compared to  $165.00REI OUTLET
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