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(397 products)Products (397)
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- REI Co-opMidweight Long-Sleeve Base Layer Top - Women's$37.93 - $54.95
- REI Co-opMidweight Base Layer Half-Zip Top - Women's$29.83 - $59.95
- REI Co-opMidweight Long-Sleeve Base Layer Top - Men'sTop Rated$37.93 - $54.95
- REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men'sTop Rated$39.83 - $79.95
- SmartwoolIntraknit Active Base Layer Bottoms - Women's$59.83Save 45%compared to  $110.00
- REI Co-opMidweight Base Layer Crew Top - Kids'Top Rated$23.93 - $34.95
- REI Co-opMidweight Base Layer Tights - Women's$37.93 - $54.95
- REI Co-opMerino 185 Base Layer Bottoms - Men's$79.95
- REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's$79.95
- Sale Ends Aug 4CraftActive Intensity Base Layer Pants - Women's$18.73Save 65%compared to  $54.95REI OUTLET
- SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's$81.73Save 28%compared to  $115.00REI OUTLET
- SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men'sTop Rated$66.93 - $90.00
- SmartwoolClassic Thermal Merino Crew Base Layer Top - Women'sTop Rated$115.00
- Arc'teryxRho LT Zip-Neck Base Layer Top - Men'sTop Rated$84.93 - $120.00
- REI Co-opMidweight Base Layer Half-Zip Top - Men'sTop Rated$29.83 - $59.95
- REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Women'sTop Rated$62.93 - $89.95
- REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Women'sTop Rated$39.95
- SmartwoolIntraknit Active Long-Sleeve Base Layer Top - Women's$59.83Save 45%compared to  $110.00
- SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Women's$66.93 - $90.00
- REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men'sTop Rated$49.83 - $89.95
- REI Co-opLightweight Crew Base Layer Top - Women'sTop Rated$29.95
- REI Co-opMidweight Base Layer Bottoms - Kids'Top Rated$23.93 - $34.95
- Arc'teryxRho LT Base Layer Bottoms - Men's$49.83 - $100.00
- REI Co-opLightweight Base Layer Tights - Women's Plus Sizes$9.83Save 75%compared to  $39.95
- REI Co-opMidweight Base Layer Bottoms - Men's$54.95
- REI Co-opLightweight Base Layer Bottoms - Men'sTop Rated$39.95
- REI Co-opMidweight Crew Base Layer Top - Toddlers'Top Rated$24.95
- tasc PerformanceElevation Merino Base Layer Bottoms - Men's$49.73Save 37%compared to  $79.00REI OUTLET
- REI Co-opLightweight Half-Zip Base Layer Top - Men's$44.95
- REI Co-opLightweight Base Layer Bottoms - Infants'/Toddlers'Top Rated$19.95
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