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Long Sleeve Base Layers
(256 products)Products (256)
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SeirusHeatwave Quick Body Mapped Long-Sleeve Base Layer Hoodie - Women's
$135.00Underwear Weight:MidweightSize Type:RegularKari TraaEdith Long-Sleeve Base Layer Top - Women's
$74.73Save 25%compared to  $100.00Underwear Weight:MidweightSize Type:RegularREI OUTLETHelly HansenLIFA Merino Midweight Crew Base Layer Top - Women's
$74.73Save 25%compared to  $100.00Underwear Weight:MidweightSize Type:RegularREI OUTLETHelly HansenHH Merino Half-Zip Base Layer Top - Women's
$89.73Save 28%compared to  $125.00Underwear Weight:LightweightSize Type:RegularREI OUTLET- Top Rated
Arc'teryxRho Zip-Neck Base Layer Top - Women's
$120.00Underwear Weight:LightweightSize Type:Regular, Plus ArtilectDarkhorse 185 Zoned Crew Base Layer Top - Women's
$109.73Save 31%compared to  $160.00Underwear Weight:MidweightSize Type:RegularREI OUTLETHelly HansenHH Lifa Active Crew Base Layer Top - Women's
$44.73Save 25%compared to  $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLETIcebreakerMerino 200 Oasis Long-Sleeve Scoop Thermal Top - Women's
$78.73Save 25%compared to  $105.00Underwear Weight:LightweightSize Type:RegularREI OUTLETKari TraaFryd Long-Sleeve Base Layer Top - Women's
$37.73 - $41.73Save 30% - 31%compared to  $55.00 - $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLETKari TraaLune Long-Sleeve Base Layer Top - Women's
$48.73Save 25%compared to  $65.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETBurtonFleece Base Layer Set - Kids'
$64.95Underwear Weight:MidweightSize Type:RegularKari TraaSummer Wool Long-Sleeve Base Layer Top - Women's
$56.73Save 29%compared to  $80.00Underwear Weight:LightweightSize Type:RegularREI OUTLETArtilectFlatiron 185 Quarter-Zip Base Layer Top - Women's
$109.73Save 31%compared to  $160.00Underwear Weight:MidweightSize Type:RegularREI OUTLETHelly 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 OUTLETFree CountryForce Grid Fleece Base Layer Top - Men's
$29.73Save 33%compared to  $45.00Underwear Weight:LightweightSize Type:Regular, BigREI 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 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 OUTLETHelly HansenHH LIFA Base Layer Set - Kids'
$70.00Underwear Weight:UltralightweightSize Type:RegularHelly HansenH1 Pro Lifa Seamless Half-Zip Base Layer Top - Men's
$112.73Save 24%compared to  $150.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLETWild RyeHailey Half-Zip Base Layer Top - Women's
$69.73Save 41%compared to  $119.00Underwear Weight:MidweightSize Type:RegularREI OUTLETKari TraaJuliane Wool Half-Zip Base Layer Top - Women's
$104.73Save 25%compared to  $140.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETSmartwoolIntraknit Active Base Layer Crew Top - Women's
$76.73Save 30%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI 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 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
151–180 of 256 products
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