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Outdoor Underwear
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- tasc PerformanceElevation Merino Base Layer Bottoms - Men's$49.73 - $54.73Save 30% - 37%compared to  $79.00REI OUTLET
- SmartwoolIntraknit Active Base Layer Crew Shirt - Men's$81.73Save 25%compared to  $110.00REI OUTLET
- Kari TraaSmekker Base Layer Pants - Women's$89.73Save 25%compared to  $120.00REI OUTLET
- Boody Eco WearLYOLYTE G-String Underwear - Package of 2 - Women's$25.73Save 19%compared to  $31.90REI OUTLET
- RONHILLSeamless Bra$39.73Save 20%compared to  $49.95REI OUTLET
- SpraywayEffra Jacket Base Layer Top - Women's$46.73Save 28%compared to  $64.95REI OUTLET
- Icebreaker200 ZoneKnit Long-Sleeve Crewe Base Layer Thermal Top - Men'sTop Rated$109.73Save 26%compared to  $150.00REI OUTLET
- Terramar3.0 Thermawool Crew Base Layer Top - Women's$49.73 - $52.73Save 24% - 28%compared to  $70.00REI OUTLET
- ArtilectBoulder 125 Crew Long-Sleeve Base Layer Top - Women's$82.73Save 31%compared to  $120.00REI OUTLET
- Arc'teryxRho Heavyweight Zip-Neck Base Layer Top - Men'sNew arrival$112.73Save 19%compared to  $140.00REI OUTLET
- IcebreakerMerino 260 Vertex Long-Sleeve Crewe Natural Shades Base Layer Top - Women's$104.73Save 25%compared to  $140.00REI OUTLET
- Kari TraaLilja Base Layer Pants - Women's$49.73Save 24%compared to  $66.00REI OUTLET
- RONHILLBrief Underwear - Women's$19.73Save 34%compared to  $29.95REI OUTLET
- ArtilectFlatiron 185 Quarter-Zip Base Layer Top - Women's$109.73Save 31%compared to  $160.00REI OUTLET
- FisheSports BraNew arrival$39.73Save 37%compared to  $64.00REI OUTLET
- Kari TraaFroya Printed Sports Bra$29.73Save 25%compared to  $40.00REI OUTLET
- CraftCore Dry Active Comfort Long-Sleeve Base Layer Jersey - Kids'$38.73Save 40%compared to  $64.95REI OUTLET
- Kari TraaLilja Long-Sleeve Base Layer Top - Women's$49.73Save 24%compared to  $66.00REI OUTLET
- Boody Eco WearG-String Thong Underwear - Women's - Package of 2$22.73Save 18%compared to  $27.95REI OUTLET
- Arc'teryxRho LT Base Layer Bottoms - Men'sNew arrival$79.73Save 20%compared to  $100.00REI OUTLET
- Kari TraaMina Base Layer Pants - Women's$44.73Save 25%compared to  $60.00REI OUTLET
- IcebreakerMerino 260 Tech Thermal Base Layer Leggings - Kids'Top Rated$49.73Save 28%compared to  $70.00REI OUTLET
- SmartwoolClassic Thermal Merino Lettuce Edge Base Layer Bottoms - Women's$82.73Save 28%compared to  $115.00REI OUTLET
- Icebreaker200 Oasis Sonebula Base Layer Leggings - Women's$89.73Save 25%compared to  $120.00REI OUTLET
- CraftActive Intensity Base Layer - Women's$36.73Save 43%compared to  $64.95REI OUTLET
- Outdoor ResearchVantage Printed Crop Top$38.73Save 29%compared to  $55.00REI OUTLET
- Terramar3.0 Thermawool Base Layer Tights - Women's$52.73Save 24%compared to  $70.00REI OUTLET
- SmartwoolClassic Thermal Merino Base Layer Hoodie - Kids'$51.73Save 31%compared to  $75.00REI OUTLET
- Kari TraaRose Light High-Waisted Base Layer Pants - Women's$82.73Save 24%compared to  $110.00REI OUTLET
- Kari TraaMalia Base Layer Pants - Women's$52.73Save 24%compared to  $70.00REI OUTLET
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