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REI Co-op Base Layers
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- REI Co-opMidweight Base Layer Crew Top - Men's$49.95
- REI Co-opMidweight Base Layer Half-Zip Top - Men's$54.95
- REI Co-opMidweight Base Layer Bottoms - Men's$49.95
- REI Co-opMidweight Base Layer Half-Zip Top - Women's$54.95
- REI Co-opMerino Midweight Base Layer Top - Women's$79.50
- REI Co-opMerino Midweight Base Layer Bottoms - Men's$79.50
- REI Co-opMerino Midweight Base Layer Tights - Women's$79.50
- REI Co-opMidweight Base Layer Crew Top – Women's$49.95
- REI Co-opLightweight Base Layer Long-Sleeve Crew Top - Women's$39.95
- REI Co-opMidweight Base Layer Tights - Women's$49.95
- REI Co-opLightweight Base Layer Long-Sleeve Crew Top - Men's$39.95
- REI Co-opMerino Midweight Base Layer Long-Sleeve Crew Top - Men's$38.83 - $79.50
- REI Co-opLightweight Base Layer Bottoms - Men's$39.95
- REI Co-opMidweight Base Layer Zip Hoodie - Men's$59.95
- REI Co-opMidweight Crew Long Underwear Top - Kids'$21.93 - $29.95
- REI Co-opMidweight Long Underwear Bottoms - Asphalt - Kids'$29.95
- REI Co-opMerino Midweight Half-Zip Base Layer Top - Women's$61.93 - $89.50
- REI Co-opMidweight Base Layer Zip Hoodie - Women's$59.95
- REI Co-opSilk V-Neck Long Underwear Shirt - Women's$49.95
- REI Co-opLightweight Base Layer Half-Zip Top - Men's$44.95
- REI Co-opMerino Midweight Base Layer Half-Zip Top - Men's$43.83 - $89.50
- REI Co-opLightweight Base Layer Tights - Women's$39.95
- REI Co-opMidweight Base Layer Tights - Women's Petite Sizes$49.95
- REI Co-opSilk Long Underwear Bottoms - Women's$49.95
- REI Co-opMidweight Base Layer Half-Zip Top - Men's Tall Sizes$54.95
- REI Co-opMidweight Long Underwear Bottoms - Kids'$21.93 - $29.95
- REI Co-opMerino Midweight Crew Base Layer Top - Kids'$49.95
- REI Co-opMerino Midweight Base Layer Bottoms - Kids'$36.93 - $49.95
- REI Co-opLightweight Base Layer Half-Zip Top - Women's$44.95
- REI Co-opMerino Midweight Base Layer Crew Top - Men's$34.83 - $69.95