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Polyester Base Layers
(118 products)Products (118)
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- SpraywayEffra Jacket Base Layer Top - Women's$46.73Save 28%compared to  $64.95Underwear Weight:HeavyweightSize Type:Regular, PlusREI OUTLET
- KUHLReactiv Lite Grid Quarter-Zip Base Layer Top - Men's$119.00Underwear Weight:LightweightSize Type:Regular, Big
- SpraywayEffra Hoody Base Layer Top - Women's$49.73Save 28%compared to  $69.95Underwear Weight:HeavyweightSize Type:Regular, PlusREI OUTLET
- SaxxRoast Master Midweight Long-Sleeve Crew Base Layer Top - Men's$52.73Save 29%compared to  $75.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET
- CraftCORE Dry Active Comfort Base Layer Top - Men's$39.73Save 38%compared to  $64.95Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET
- TerramarC-Suite Fusion Thermal Pants - Women's$46.73Save 28%compared to  $65.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- CotopaxiLiso Base Layer Top - Men'sTop Rated$44.73Save 31%compared to  $65.00Underwear Weight:MidweightSize Type:BigREI OUTLET
- KUHLReactiv Lite Grid Long-Sleeve Crew Base Layer Top - Men's$109.00Underwear Weight:LightweightSize Type:Regular, Big
- Terramar2.0 Cloud Nine Midweight Performance Base Layer Scoop Shirt - Women's$29.73Save 33%compared to  $45.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Picture Organic ClothingNangha Base Layer Top - Men's$44.83Save 50%compared to  $90.00Underwear Weight:MidweightSize Type:Regular, Big
- TerramarC-Suite Mammoth Sherpa Fleece Mid-Layer Joggers - Women's$56.73Save 29%compared to  $80.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- TerramarC-Suite Mammoth Sherpa Fleece Mid-Layer Pants - Men's$56.73Save 29%compared to  $80.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET
- The North FaceSummit Series Pro 120 Crew Base Layer Top - Women'sTop Rated$100.00Underwear Weight:UltralightweightSize Type:Regular, Plus
- CraftActive Intensity Zip Base Layer Top - Women's$54.73Save 31%compared to  $79.95Underwear Weight:LightweightSize Type:RegularREI OUTLET
- SpraywayEffra Leggings Base Layer Bottoms - Women's$36.73Save 26%compared to  $49.95Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- KUHLReactiv Lite Grid Base Layer Bottoms - Men's$99.00Underwear Weight:LightweightSize Type:Regular, Big
- PatagoniaCapilene Thermal Weight Long Underwear Bottoms - Women's$99.00Underwear Weight:HeavyweightSize Type:Regular
- Helly HansenLIFA ACTIVE Graphic Crew Base Layer Top - Women's$46.73Save 28%compared to  $65.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- The North FaceFD Pro 160 Base Layer Crew Top - Women's$70.00Underwear Weight:MidweightSize Type:Regular
- Helly HansenHH Lifa Active Base Layer Pants - Men's$39.73Save 27%compared to  $55.00Underwear Weight:LightweightSize Type:BigREI OUTLET
- SeirusHeatwave All Season Reversible Long-Sleeve Base Layer Top - Women's$36.83Save 50%compared to  $75.00Underwear Weight:LightweightSize Type:Regular
- Mountain HardwearMountain Stretch Base Layer Tights - Men's$46.73Save 37%compared to  $75.00Underwear Weight:MidweightSize Type:BigREI OUTLET
- Free CountryCloud Knit Base Layer Bottoms - Women's$31.73Save 29%compared to  $45.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- The North FaceSummit Series Pro 120 Base Layer Tights - Women'sTop Rated$100.00Underwear Weight:UltralightweightSize Type:Regular, Plus
- The North FaceSummit Pro 120 Base Layer Tights - Women's$100.00Underwear Weight:MidweightSize Type:Regular
- PatagoniaCapilene Thermal Weight Boot-Length Long Underwear Bottoms - Women's$85.00Underwear Weight:HeavyweightSize Type:Regular
- Free CountryForce Grid Fleece Base Layer Top - Men's$29.73Save 33%compared to  $45.00Underwear Weight:LightweightSize Type:BigREI OUTLET
- PatagoniaCapilene Thermal Weight Long Underwear Crew Top - Women's$99.00Underwear Weight:HeavyweightSize Type:Regular
- The North FaceFD Pro 160 Base Layer Tights - Women's$70.00Underwear Weight:MidweightSize Type:Plus
- PatagoniaCapilene Thermal Weight Zip-Neck Long Underwear Top - Women's$109.00Underwear Weight:HeavyweightSize Type:Regular
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