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- Ortovox230 Competition Long-Sleeve Base Layer Top - Men's$110.00
- Kari TraaRose Half-Zip Base Layer Top - Women'sTop Rated$59.83 - $83.99Save 30% - 50%compared to  $120.00
- Sale Ends May 26REI Co-opMidweight Long-Sleeve Base Layer Top - Women's$38.39Save 30%compared to  $54.95
- Arms of Andes300 Lightweight Alpaca Wool Pullover Base Layer Hoodie - Women's$140.00
- SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Women's$64.83 - $97.49Save 25% - 50%compared to  $130.00
- Arms of Andes160 Ultralight Alpaca Wool Long-Sleeve Base Layer Shirt - Women's$85.00 - $100.00
- Sale Ends May 26SmartwoolClassic Thermal Merino Base Layer Bottoms - Men'sTop Rated$86.19Save 25%compared to  $115.00
- Sale Ends May 26REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's$55.89Save 30%compared to  $79.95
- Sale Ends May 26REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's$55.89Save 30%compared to  $79.95
- Sale Ends May 26REI Co-opMerino 185 Base Layer Top - Women's$48.89Save 30%compared to  $69.95
- Helly HansenLifa Merino Midweight Base Layer Pants - Men's$100.00
- Sale Ends May 26REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Men's$27.89Save 30%compared to  $39.95
- Sale Ends May 26REI Co-opMidweight Long-Sleeve Base Layer Top - Men'sTop Rated$38.39Save 30%compared to  $54.95
- Arc'teryxRho LT Crew Neck Base Layer Top - Men'sTop Rated$70.83 - $100.00
- Sale Ends May 26REI Co-opMerino 185 Base Layer Bottoms - Women's$55.89Save 30%compared to  $79.95
- Sale Ends May 26REI Co-opMidweight Base Layer Bottoms - Men's$38.39Save 30%compared to  $54.95
- Sale Ends May 26SmartwoolClassic Thermal Merino Crew Base Layer Top - Men'sTop Rated$86.19Save 25%compared to  $115.00
- REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Men's$49.83 - $99.95
- Sale Ends May 26REI Co-opMidweight Base Layer Tights - Women's$38.39Save 30%compared to  $54.95
- Sale Ends May 26SmartwoolClassic All-Season Merino Base Layer Bottoms - Women's$67.49Save 25%compared to  $90.00
- Sale Ends May 26SmartwoolClassic All-Season Merino Quarter-Zip Base Layer Top - Men's$71.19Save 25%compared to  $95.00
- Sale Ends May 26REI Co-opLightweight Crew Base Layer Top - Women's$20.89Save 30%compared to  $29.95
- Sale Ends May 26REI Co-opLightweight Half-Zip Base Layer Top - Women's$31.39Save 30%compared to  $44.95
- PatagoniaCapilene Thermal Weight Long Underwear Bottoms - Women's$99.00
- Sale Ends May 26REI Co-opMerino Wool Liner Crew Socks$11.09Save 30%compared to  $15.95
- Sale Ends May 26REI Co-opCOOLMAX EcoMade Liner Crew SocksTop Rated$8.29Save 30%compared to  $11.95
- Sale Ends May 26REI Co-opSilk Liner Crew Socks$12.49Save 30%compared to  $17.95
- Sale Ends May 26REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men'sTop Rated$62.89Save 30%compared to  $89.95
- Sale Ends May 26REI Co-opLightweight Half-Zip Base Layer Top - Men's$31.39Save 30%compared to  $44.95
- Sale Ends May 26SmartwoolClassic All-Season Merino Base Layer Bottoms - Men's$67.49Save 25%compared to  $90.00
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