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Polyester Base Layers
(95 products)Products (95)
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- Free CountryForce Grid Fleece Base Layer Bottoms - Men's$29.73Save 33%compared to  $45.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLET
- The North FaceSummit Series Pro 120 Base Layer Tights - Women's$54.83Save 50%compared to  $110.00Underwear Weight:UltralightweightSize Type:Regular
- PatagoniaCapilene Thermal Weight Zip-Neck Top - Men's$115.00Underwear Weight:HeavyweightSize Type:Regular
- Hot ChillysOriginals Solid Base Layer Crew - Kids'$34.73Save 26%compared to  $47.50Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Mountain HardwearUp First Tech Fleece Base Layer Bottoms - Men's$74.73Save 25%compared to  $100.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET
- Free CountryForce Grid Fleece Base Layer Top - Men'sTop Rated$29.73Save 33%compared to  $45.00Underwear Weight:LightweightSize Type:BigREI OUTLET
- Kari TraaFierce Base Layer Pants - Women's$46.73Save 29%compared to  $66.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- TerramarC-Suite Mammoth Sherpa Fleece Mid-Layer Joggers - Women's$51.73Save 35%compared to  $80.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- KUHLReactiv Lite Grid Quarter-Zip Base Layer Top - Men's$119.00Underwear Weight:LightweightSize Type:Regular, Big
- RHONEApres Houndstooth Seamless Base Layer Leggings - Women's$88.93Save 30%compared to  $128.00Underwear Weight:LightweightSize Type:Regular
- Arc'teryxRho SV Base Layer Bottoms - Men's$90.93Save 24%compared to  $120.00Underwear Weight:HeavyweightSize Type:Regular, Big
- The North FaceDotKnit Thermal Base Layer Set - Toddlers'Top Rated$48.93Save 30%compared to  $70.00Underwear Weight:MidweightSize Type:Regular
- Sale Ends Apr 13TerramarC-Suite Mammoth Sherpa Fleece Mid-Layer Pants - Men's$47.73Save 40%compared to  $80.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET
- KUHLReactiv Lite Grid Long-Sleeve Crew Base Layer Top - Men's$109.00Underwear Weight:LightweightSize Type:Regular, Big
- Black DiamondCoefficient LT One Piece Base Layer - Men'sNew arrival$149.73Save 31%compared to  $219.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Hot ChillysOriginals Solid Base Layer Pants - Kids'$34.73Save 26%compared to  $47.50Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Hot ChillysOriginals Print Base Layer Pants - Kids'$39.73Save 27%compared to  $55.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Hot ChillysOriginals Print Base Layer Crew - Kids'$39.73Save 27%compared to  $55.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Sale Ends Apr 13Kari TraaFierce Long-Sleeve Base Layer Top - Women's$41.73Save 36%compared to  $66.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- RHONEApres Houndstooth Quarter-Zip Base Layer Top - Women's$102.93Save 30%compared to  $148.00Underwear Weight:LightweightSize Type:Regular
- Terramar2.0 Cloud Nine Midweight Base Layer Capri Pants - Women's$28.73Save 28%compared to  $40.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Kari TraaFryd Base Layer Pants - Women's$40.73Save 32%compared to  $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Kari TraaFryd Half-Zip Base Layer Top - Women's$48.73Save 26%compared to  $66.00Underwear Weight:LightweightSize Type:PlusREI OUTLET
- SaxxRoast Master Midweight Long-Sleeve Crew Base Layer Top - Men's$47.73Save 36%compared to  $75.00Underwear Weight:MidweightSize Type:BigREI OUTLET
- The North FaceDotKnit Thermal Base Layer Set - Kids'$80.00Underwear Weight:MidweightSize Type:Regular
- Kari TraaFryd Long-Sleeve Base Layer Top - Women's$49.73Save 23%compared to  $65.00Underwear Weight:LightweightSize Type:Plus, RegularREI OUTLET
- SpraywayEffra Crew Base Layer Top - Women's$36.73Save 26%compared to  $49.95Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- Deux par DeuxThermal Underwear Base Layer Set - Kids'$35.83Save 50%compared to  $72.00Underwear Weight:MidweightSize Type:Regular
- PatagoniaCapilene Midweight Crew Base Layer Top - Kids'$28.73Save 26%compared to  $39.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Sale Ends Apr 13Arc'teryxRho LT Base Layer Bottoms - Men's$69.73Save 30%compared to  $100.00Underwear Weight:MidweightSize Type:BigREI OUTLET
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