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- SeirusHeatwave Body Mapped Quarter-Zip Long-Sleeve Base Layer Top - Women's$69.83Save 50%compared to  $140.00Underwear Weight:MidweightSize Type:Regular
- BurtonHeavyweight X Base Layer Pants - Women's$49.83Save 50%compared to  $99.95Underwear Weight:HeavyweightSize Type:Regular
- Kari TraaFaith Base Layer Pants - Women's$54.83Save 50%compared to  $110.00Underwear Weight:HeavyweightSize Type:Regular
- SmartwoolIntraknit Thermal Merino Colorblock Quarter-Zip Base Layer Top - Women's$97.93Save 30%compared to  $140.00Underwear Weight:MidweightSize Type:Regular
- Arc'teryxRho Heavyweight Zip-Neck Base Layer Top - Men'sTop Rated$98.83Save 29%compared to  $140.00Underwear Weight:HeavyweightSize Type:Regular, Big
- Arc'teryxRho Merino Wool Base Layer Bottoms - Men's$96.93Save 19%compared to  $120.00Underwear Weight:LightweightSize Type:Regular, Big
- Wild RyeJane 7/8 Base Layer Leggings - Women's$56.83Save 50%compared to  $115.00Underwear Weight:LightweightSize Type:Regular
- BurtonMidweight Base Layer Crew Top - Women's$31.83Save 50%compared to  $64.95Underwear Weight:MidweightSize Type:Regular
- REI Co-opHeavyweight Merino Base Layer Bottoms - Men's$49.83Save 50%compared to  $99.95Underwear Weight:HeavyweightSize Type:Big, Tall
- HalfdaysJohnson Base Layer Top - Women's$62.93Save 25%compared to  $85.00Underwear Weight:UltralightweightSize Type:Regular, Plus
- Kari TraaSara Half-Zip Base Layer Top - Women's$54.83Save 50%compared to  $110.00Underwear Weight:HeavyweightSize Type:Regular
- Icebreaker125 ZoneKnit Long-Sleeve Crewe Base Layer Top - Women's$61.83Save 50%compared to  $125.00Underwear Weight:LightweightSize Type:Regular
- SeirusHeatwave Body Mapped Full-Length Base Layer Bottoms - Women's$59.83Save 50%compared to  $119.95Underwear Weight:MidweightSize Type:Regular
- BurtonMidweight Base Layer Pants - Women's$31.83Save 50%compared to  $64.95Underwear Weight:MidweightSize Type:Regular, Plus
- HalfdaysSophia Base Layer Leggings - Women's$62.93Save 25%compared to  $85.00Underwear Weight:LightweightSize Type:Regular, Plus
- Arc'teryxRho Hoody Base Layer Top - Women'sTop Rated$104.93Save 19%compared to  $130.00Underwear Weight:LightweightSize Type:Regular
- Arc'teryxRho Merino Wool Zip-Neck Base Layer Top - Men's$98.83Save 29%compared to  $140.00Underwear Weight:MidweightSize Type:Regular, Big
- Kari TraaSara Base Layer Pants - Women's$49.83Save 50%compared to  $100.00Underwear Weight:HeavyweightSize Type:Regular
- Kari TraaKlara High-Waist Base Layer Pant - Women's$44.83Save 50%compared to  $90.00Underwear Weight:LightweightSize Type:Regular
- REI Co-opHeavyweight Merino Base Layer Bottoms - Women'sTop Rated$49.83 - $69.93Save 30% - 50%compared to  $99.95Underwear Weight:HeavyweightSize Type:Plus
- Kari TraaSval Long-Sleeve Base Layer Top - Women's$39.83Save 50%compared to  $80.00Underwear Weight:LightweightSize Type:Regular
- SeirusHeatwave All Season Reversible Long-Sleeve Base Layer Top - Women's$36.83Save 50%compared to  $75.00Underwear Weight:LightweightSize Type:Regular
- Wild RyeHailey Half-Zip Base Layer Top - Women'sTop Rated$66.83Save 50%compared to  $135.00Underwear Weight:MidweightSize Type:Regular
- REI Co-opLightweight Base Layer Tights - Women's Plus Sizes$9.83Save 75%compared to  $39.95Underwear Weight:LightweightSize Type:Plus
- IcebreakerMerino 200 Oasis Base Layer Leggings - Kids'$41.93Save 30%compared to  $60.00Underwear Weight:LightweightSize Type:Regular
- Wild RyeEvie Raglan Base Layer Top - Women'sTop Rated$61.83Save 50%compared to  $125.00Underwear Weight:LightweightSize Type:Regular, Plus
- Nani SwimwearUinta Base Layer Bottoms - Women'sTop Rated$36.83Save 50%compared to  $75.00Underwear Weight:MidweightSize Type:Regular, Plus
- Nani SwimwearUinta Base Layer Top - Women'sTop Rated$39.83Save 50%compared to  $80.00Underwear Weight:MidweightSize Type:Regular, Plus
- PatagoniaCapilene Midweight Base Layer Bottoms - Kids'$26.93Save 30%compared to  $39.00Underwear Weight:MidweightSize Type:Regular
- Picture Organic ClothingNangha Base Layer Top - Men's$44.83Save 50%compared to  $90.00Underwear Weight:MidweightSize Type:Regular, Big
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