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Base Layers
(392 products)Products (392)
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SpraywayEffra Jacket Base Layer Top - Women's
$46.73Save 28%compared to $64.95Underwear Weight:HeavyweightSize Type:Regular, PlusREI OUTLETCraftCore Dry Active Comfort Base Layer Pants - Men's
$32.73Save 34%compared to $49.95Underwear Weight:MidweightSize Type:RegularREI OUTLET- New arrival
Kari TraaMalia Base Layer Pants - Women's
$52.73Save 24%compared to $70.00Underwear Weight:MidweightSize Type:Regular, PlusREI OUTLET Icebreaker200 ZoneKnit Thermal Base Layer Leggings - Women's
$109.73Save 26%compared to $150.00Underwear Weight:MidweightSize Type:RegularREI OUTLETHelly HansenGraphic Lifa Merino Base Layer Set - Kids'
$74.73Save 32%compared to $110.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETTerramar3.0 Thermawool Crew Base Layer Top - Women's
$49.73 - $52.73Save 24% - 28%compared to $70.00Underwear Weight:MidweightSize Type:RegularREI OUTLET- Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Half-Zip Thermal Base Layer Top - Women's
$86.73Save 24%compared to $115.00Underwear Weight:MidweightSize Type:Regular, PlusREI OUTLET Icebreaker200 Oasis Sonebula Long-Sleeve Crewe Base Layer Top - Women's
$89.73Save 25%compared to $120.00Underwear Weight:LightweightSize Type:RegularREI OUTLETTerramar3.0 Thermawool Base Layer Tights - Women's
$52.73Save 24%compared to $70.00Underwear Weight:MidweightSize Type:RegularREI OUTLET- New arrival
Kari TraaLucie Half-Zip Base Layer Top - Women's
$67.73Save 24%compared to $90.00Underwear Weight:LightweightSize Type:RegularREI OUTLET Wild RyeJane Leggings - Women's
$64.73Save 40%compared to $109.00Underwear Weight:LightweightSize Type:RegularREI OUTLETHelly HansenLIFA Merino Midweight Crew Base Layer Top - Women's
$74.73Save 25%compared to $100.00Underwear Weight:MidweightSize Type:RegularREI OUTLET- Top Rated
IcebreakerMerino 260 Tech Thermal Base Layer Leggings - Kids'
$49.73Save 28%compared to $70.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET - Top Rated
SmartwoolClassic All Season Merino Long-Sleeve Base Layer Top - Men's
$67.73Save 24%compared to $90.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLET Terramar3.0 Thermawool Half-Zip Base Layer Top - Women's
$56.73Save 24%compared to $75.00Underwear Weight:MidweightSize Type:RegularREI OUTLETTerramarC-Suite Fusion Thermal Pants - Women's
$46.73Save 28%compared to $65.00Underwear Weight:MidweightSize Type:RegularREI OUTLET- New arrival
Kari TraaLilja Long-Sleeve Base Layer Top - Women's
$49.73Save 24%compared to $66.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET - New arrival
Kari TraaLilja Base Layer Pants - Women's
$49.73Save 24%compared to $66.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET Kari TraaRose Light High-Waisted Base Layer Pants - Women's
$82.73Save 24%compared to $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLET- Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's
$86.73Save 24%compared to $115.00Underwear Weight:MidweightSize Type:Regular, PlusREI OUTLET ArtilectDarkhorse 185 Zoned Base Layer Leggings - Women's
$109.73Save 31%compared to $160.00Underwear Weight:MidweightSize Type:RegularREI OUTLETIcebreakerMerino 260 Vertex Long-Sleeve Crewe Natural Shades Base Layer Top - Women's
$104.73Save 25%compared to $140.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET- Top Rated
Arc'teryxRho LT Base Layer Hoody - Men's
$96.93Save 19%compared to $120.00Underwear Weight:LightweightSize Type:Big - New arrival
Kari TraaAlma Hood Base Layer Top - Women's
$59.73Save 25%compared to $80.00Underwear Weight:UltralightweightSize Type:RegularREI OUTLET Free CountryMicrotech Heat Cocaber Base Layer Top - Women's
$34.73Save 30%compared to $50.00Underwear Weight:LightweightSize Type:RegularREI OUTLETCraftActive Intensity Base Layer Pants - Women's
$31.73Save 42%compared to $54.95Underwear Weight:LightweightSize Type:RegularREI OUTLETTerramarC-Suite Mammoth Sherpa Fleece Mid-Layer Pants - Men's
$56.73Save 29%compared to $80.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET- New arrival
Kari TraaMina Long-Sleeve Base Layer Top - Women's
$44.73Save 25%compared to $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLET CraftCore Dry Active Comfort Base Layer Pants - Women's
$29.73Save 33%compared to $44.95Underwear Weight:MidweightSize Type:RegularREI OUTLET- New arrival
Kari TraaMina Base Layer Pants - Women's
$44.73Save 25%compared to $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
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