Skip to search results
loaded 425 results
Base Layers
(425 products)Products (425)
Sort: Best Match
Helly HansenLIFA Merino Midweight Half-Zip Base Layer Top - Women's
$79.73 - $82.73Save 24% - 27%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLETKari TraaEdith Half-Zip Base Layer Top - Women's
$76.73Save 30%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLETKari TraaKlara High-Waisted Base Layer Pants - Women's
$62.73Save 30%compared to  $90.00Underwear Weight:LightweightSize Type:RegularREI OUTLETMons RoyaleCascade Merino Flex Mock-Neck Base Layer Top - Women's
$89.73Save 35%compared to  $140.00Underwear Weight:MidweightSize Type:RegularREI OUTLETFree CountryMicrotech Heat Cocaber Base Layer Top - Men's
$26.73Save 33%compared to  $40.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLETKari TraaSummer Wool Base Layer Pants - Women's
$49.73Save 28%compared to  $70.00Underwear Weight:LightweightSize Type:RegularREI OUTLETKari TraaRose Light Base Layer Top - Women's
$89.73Save 25%compared to  $120.00Underwear Weight:MidweightSize Type:RegularREI OUTLETFree CountryForce Grid Fleece Base Layer Top - Men's
$29.73Save 33%compared to  $45.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLETHelly HansenLifa Active Graphic Crew Base Layer Top - Women's
$48.73Save 25%compared to  $65.00Underwear Weight:LightweightSize Type:RegularREI OUTLETFree CountryCloud Knit Base Layer Bottoms - Women's
$31.73Save 29%compared to  $45.00Underwear Weight:LightweightSize Type:RegularREI OUTLETIcebreakerMerino 260 Vertex Long-Sleeve Crewe Natural Shades Base Layer Top - Men's
$104.73Save 25%compared to  $140.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETKari TraaSilja Base Layer Pants - Women's
$89.73Save 25%compared to  $120.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETKari TraaFierce Base Layer Pants - Women's
$39.73Save 33%compared to  $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLETWild RyeJane Leggings - Women's
$64.73Save 40%compared to  $109.00Underwear Weight:LightweightSize Type:RegularREI OUTLETArms of Andes160 Ultralight Alpaca Wool Crew Neck Base Layer T-Shirt - Women's
$75.00Underwear Weight:UltralightweightSize Type:RegularKari TraaElenore Base Layer Leggings - Women's
$63.73Save 25%compared to  $85.00Underwear Weight:LightweightSize Type:RegularREI OUTLETHelly HansenH1 Pro Lifa Seamless Half-Zip Base Layer Top - Men's
$112.73Save 24%compared to  $150.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLETIcebreakerMerino 260 Vertex Long-Sleeve Half-Zip Natural Shades Base Layer Top - Women's
$111.73Save 25%compared to  $150.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETKari TraaJuliane Wool Half-Zip Base Layer Top - Women's
$104.73Save 25%compared to  $140.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETWild RyeHailey Half-Zip Base Layer Top - Women's
$69.73Save 41%compared to  $119.00Underwear Weight:MidweightSize Type:RegularREI OUTLETSmartwoolIntraknit Active Base Layer Crew Top - Women's
$76.73Save 30%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLETIcebreakerMerino 175 Everyday Long-Sleeve Crewe Thermal Top - Men's
$63.73Save 25%compared to  $85.00Underwear Weight:LightweightSize Type:RegularREI OUTLETtasc PerformanceElevation Merino Base Layer Bottoms - Men's
$54.73Save 30%compared to  $79.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLETCraftActive Intensity Base Layer Pants - Women's
$31.73Save 42%compared to  $54.95Underwear Weight:LightweightSize Type:RegularREI OUTLETMountain HardwearMountain Stretch Base Layer Tights - Men's
$55.73Save 25%compared to  $75.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET- Top Rated
SmartwoolClassic Thermal Merino Base Layer Bottoms - Kids'
$48.73Save 25%compared to  $65.00Underwear Weight:MidweightSize Type:RegularREI OUTLET Free CountryForce Grid Fleece Base Layer Bottoms - Men's
$29.73Save 33%compared to  $45.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLETHelly HansenLIFA ACTIVE Stripe Crew Base Layer Top - Women's
$44.73Save 25%compared to  $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLETCraftCORE Dry Active Comfort Base Layer Top - Women's
$44.73Save 31%compared to  $64.95Underwear Weight:MidweightSize Type:RegularREI OUTLETKari TraaRose High-Waist Base Layer Capris - Women's
$56.73 - $76.73Save 23% - 36%compared to  $90.00 - $100.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
271–300 of 425 products
Sort: Best Match