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Long Sleeve Base Layers
(254 products)Products (254)
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Mons RoyaleCascade Merino Flex Mock-Neck Base Layer Top - Women's
$89.73Save 35%compared to  $140.00Underwear Weight:MidweightSize Type:RegularREI OUTLETKari TraaRose Light Base Layer Top - Women's
$89.73Save 25%compared to  $120.00Underwear Weight:MidweightSize Type:RegularREI OUTLETHelly HansenLifa Active Graphic Crew Base Layer Top - Women's
$48.73Save 25%compared to  $65.00Underwear 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 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 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 OUTLET- Top Rated
Arc'teryxRho Heavyweight Zip-Neck Base Layer Top - Men's
$99.93 - $140.00Underwear Weight:HeavyweightSize Type:Regular, Big - Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's
$73.73Save 29%compared to  $105.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLET CraftActive Intensity Zip Base Layer Top - Women's
$54.73Save 31%compared to  $79.95Underwear Weight:LightweightSize Type:RegularREI OUTLETIcebreakerMerino 260 Vertex Long-Sleeve Crewe Glacial Flow Base Layer Top - Women's
$104.73Save 25%compared to  $140.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETHelly HansenLIFA Merino Midweight Crew Base Layer Top - Men's
$74.73Save 25%compared to  $100.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET- Top Rated
BurtonMidweight X Base Layer Long Neck Hoodie - Women's
$89.95Underwear Weight:MidweightSize Type:Regular Icebreaker300 MerinoFine Long-Sleeve Roll-Neck Base Layer Top - Women's
$164.73Save 25%compared to  $220.00Underwear Weight:MidweightSize Type:RegularREI OUTLETSmartwoolIntraknit Active Base Layer Crew Shirt - Women's
$76.73Save 30%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLETKari TraaSilja Half-Zip Base Layer Top - Women's
$90.73Save 30%compared to  $130.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETTerramar3.0 Thermawool Heavyweight Thermal Crew Shirt - Men's
$49.73Save 28%compared to  $70.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET- Top Rated
Arc'teryxRho Hoodie Base Layer Top - Women's
$130.00Underwear Weight:LightweightSize Type:Regular Helly HansenLIFA Merino Midweight Half-Zip Base Layer Top - Men's
$79.73 - $82.73Save 24% - 27%compared to  $110.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLETKari TraaRose Base Layer Hoodie - Women's
$90.73Save 30%compared to  $130.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETHelly HansenOdin Power Stretch Half-Zip Base Layer Top - Women's
$88.73Save 40%compared to  $150.00Underwear Weight:MidweightSize Type:RegularREI OUTLETOrtovox185 Rock'n'wool Long-Sleeve Base Layer Top - Men's
$76.73Save 30%compared to  $110.00Underwear Weight:LightweightSize Type:RegularREI OUTLETSweaty BettyFairisle Base Layer Top - Women's
$82.73Save 29%compared to  $118.00Underwear Weight:MidweightSize Type:RegularREI OUTLET- Top Rated
Arc'teryxRho LT Crew Neck Base Layer Top - Men's
$100.00Underwear Weight:LightweightSize Type:Regular, Big Helly HansenLIFA Merino Midweight 2-In-1 Base Layer Hoodie - Women's
$89.73Save 25%compared to  $120.00Underwear Weight:MidweightSize Type:RegularREI OUTLETKari TraaFloke Long-Sleeve Base Layer Top - Women's
$74.73Save 25%compared to  $100.00Underwear Weight:MidweightSize Type:RegularREI OUTLETIcebreakerMerino 200 Oasis Long-Sleeve Crewe Remarkables Base Layer Top - Men's
$85.73Save 25%compared to  $115.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET
181–210 of 254 products
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