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Moisture Wicking Base Layers
(323 products)Products (323)
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- Helly HansenLIFA Merino Midweight Balaclava Base Layer Hoodie - Women's$104.73Save 30%compared to  $150.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletUnderwear Weight:MidweightSize Type:RegularREI OUTLET
- PatagoniaCapilene Midweight Zip-Neck Base Layer Top - Women's$74.73Save 24%compared to  $99.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletUnderwear Weight:MidweightSize Type:RegularREI OUTLET
- CotopaxiLiso Base Layer Top - Men'sTop Rated$44.73Save 31%compared to  $65.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletUnderwear Weight:MidweightSize Type:BigREI OUTLET
- SeirusHeatwave Body Mapped Full-Length Base Layer Bottoms - Women's$59.83Save 50%compared to  $119.95Underwear Weight:MidweightSize Type:Regular
- PatagoniaCapilene Midweight Base Layer Bottoms - Infants'$21.73Save 25%compared to  $29.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletUnderwear Weight:MidweightSize Type:RegularREI OUTLET
- TerramarC-Suite Fusion Thermal Pants - Women's$46.73Save 28%compared to  $65.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletUnderwear Weight:MidweightSize Type:RegularREI OUTLET
- Arc'teryxRho Base Layer Bottoms - Women's$79.73Save 20%compared to  $100.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletUnderwear Weight:MidweightSize Type:Regular, PlusREI OUTLET
- Icebreaker200 ZoneKnit Merino Thermal Base Layer Leggings - Men's$109.73Save 26%compared to  $150.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletSize Type:Regular, BigREI OUTLET
- Helly HansenHH LIFA Base Layer Set - Kids'$70.00Underwear Weight:UltralightweightSize Type:Regular
- SaxxRoast Master Midweight Long-Sleeve Crew Base Layer Top - Men's$52.73Save 29%compared to  $75.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletUnderwear Weight:MidweightSize Type:Regular, BigREI OUTLET
- KUHLReactiv Lite Grid Long-Sleeve Crew Base Layer Top - Men'sNew arrival$109.00Underwear Weight:LightweightSize Type:Regular
- KUHLReactiv Lite Grid Long-Sleeve Crew Base Layer Top - Women'sNew arrival$109.00Underwear Weight:LightweightSize Type:Regular
- Helly HansenLIFA Merino Midweight Base Layer Set - Kids'$100.00Underwear Weight:MidweightSize Type:Regular
- Helly HansenH1 Pro Lifa Seamless Base Layer Bottoms - Women's$82.73Save 24%compared to  $110.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletUnderwear Weight:LightweightSize Type:RegularREI OUTLET
- Ortovox185 Merino Rock'n'wool Base Layer Top - Women's$49.83Save 50%compared to  $100.00Underwear Weight:MidweightSize Type:Regular
- Terramar2.0 Ultra Merino Turtleneck Base Layer Top - Women's$52.73Save 29%compared to  $75.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletUnderwear Weight:MidweightSize Type:RegularREI OUTLET
- Helly HansenLIFA Merino Midweight Graphic Base Layer Pants - Women's$81.93Save 25%compared to  $110.00Underwear Weight:MidweightSize Type:Regular
- Helly HansenLIFA Merino Midweight Graphic Base Layer Crew Top - Women's$110.00Underwear Weight:MidweightSize Type:Regular
- Helly HansenLifa Merino Midweight Half-Zip Base Layer Top - Men's$110.00Underwear Weight:MidweightSize Type:Regular
- The North FaceFD Pro 160 Base Layer Crew Top - Women's$70.00Underwear Weight:MidweightSize Type:Regular
- Helly HansenOdin Power Stretch Half-Zip Base Layer Top - Women's$88.73Save 40%compared to  $150.00Members use code OUT4JUL25 for $20 off $100+ at REI OutletUnderwear Weight:MidweightSize Type:RegularREI OUTLET
- KUHLReactiv Lite Grid Quarter-Zip Base Layer Top - Men'sNew arrival$119.00Underwear Weight:LightweightSize Type:Regular
- Helly HansenLifa Merino Midweight Base Layer Half-Zip Top - Women's$110.00Underwear Weight:MidweightSize Type:Regular
- Helly HansenLIFA Merino Midweight Balaclava Base Layer Hoodie - Women's$150.00Underwear Weight:MidweightSize Type:Regular
- IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men'sTop Rated$105.00Underwear Weight:MidweightSize Type:Regular, Big
- PatagoniaBaby Capilene Midweight Henley Base Layer Top - Infants'$23.93Save 31%compared to  $35.00Underwear Weight:MidweightSize Type:Regular
- KUHLReactiv Lite Grid Quarter-Zip Base Layer Top - Women'sNew arrival$119.00Underwear Weight:LightweightSize Type:Regular
- KUHLReactiv Lite Grid Base Layer Bottoms - Women'sNew arrival$99.00Underwear Weight:LightweightSize Type:Regular
- BurtonMidweight X Base Layer Pants - Women's$36.83Save 50%compared to  $74.95Underwear Weight:MidweightSize Type:Regular
- Helly HansenLifa Merino Midweight Crew Base Layer Top - Men's$100.00Underwear Weight:MidweightSize Type:Regular
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