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Long Underwear
(407 products)Products (407)
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Kari TraaFryd Long-Sleeve Base Layer Top - Women's
$34.73Save 36%compared to  $55.00REI OUTLETHelly HansenHH Merino Half-Zip Base Layer Top - Women's
$89.73Save 28%compared to  $125.00REI OUTLETHelly HansenGraphic Lifa Merino Base Layer Set - Kids'
$74.73Save 32%compared to  $110.00REI OUTLET- Top Rated
Sweaty BettyHigh-Neck Jacquard Base Layer Top - Women's
$82.73Save 29%compared to  $118.00REI OUTLET Wild RyeHailey Half-Zip Base Layer Top - Women's
$69.73Save 41%compared to  $119.00REI OUTLETHelly HansenLIFA ACTIVE Stripe Crew Base Layer Top - Women's
$44.73Save 25%compared to  $60.00REI OUTLETArtilectFlatiron 185 Base Layer Leggings - Men's
$109.73Save 31%compared to  $160.00REI OUTLETHelly HansenLIFA Active Stripe Crew Base Layer Top - Men's
$44.73Save 25%compared to  $60.00REI OUTLETTerramar2.0 Cloud Nine Midweight Performance Base Layer Scoop Shirt - Women's
$33.73Save 25%compared to  $45.00REI OUTLETHelly HansenHH Lifa Active Crew Base Layer Top - Women's
$39.73Save 33%compared to  $60.00REI OUTLETKari TraaFloke Base Layer Pants - Women's
$74.73Save 25%compared to  $100.00REI OUTLETHelly HansenLifa Merino Midweight Graphic Base Layer Top - Women's
$79.73 - $82.73Save 24% - 27%compared to  $110.00REI OUTLETSmartwoolIntraknit Active Base Layer Crew Shirt - Men's
$81.73Save 25%compared to  $110.00REI OUTLETKari TraaRose Light Half-Zip Base Layer Top - Women's
$90.73Save 30%compared to  $130.00REI OUTLETHelly HansenLIFA Merino Midweight Graphic Base Layer Pants - Women's
$82.73Save 24%compared to  $110.00REI OUTLETSmartwoolClassic Thermal Merino Base Layer Hoodie - Kids'
$53.73Save 28%compared to  $75.00REI OUTLETHelly HansenLIFA Merino Midweight Crew Base Layer Top - Men's
$74.73Save 25%compared to  $100.00REI OUTLETIcebreaker300 MerinoFine Long-Sleeve Roll-Neck Base Layer Top - Women's
$164.73Save 25%compared to  $220.00REI OUTLETIcebreakerMerino 260 Vertex Natural Shades Base Layer Leggings - Women's
$104.73Save 25%compared to  $140.00REI OUTLETKari TraaRose Long-Sleeve Base Layer Top - Women's
$76.73Save 30%compared to  $110.00REI OUTLETKari TraaJuliane Wool Base Layer Pants - Women's
$90.73Save 30%compared to  $130.00REI OUTLET- Top Rated
SmartwoolClassic Thermal Merino Base Layer Bottoms - Kids'
$48.73Save 25%compared to  $65.00REI OUTLET Kari TraaLune Long-Sleeve Base Layer Top - Women's
$48.73Save 25%compared to  $65.00REI OUTLETKari TraaFryd Base Layer Pants - Women's
$32.73 - $44.73Save 25% - 40%compared to  $55.00 - $60.00REI OUTLETFree CountryMicrotech Heat Cocaber Base Layer Bottoms - Women's
$34.73Save 30%compared to  $50.00REI OUTLETKari TraaRose Light Base Layer Top - Women's
$89.73Save 25%compared to  $120.00REI OUTLET- New arrival
Helly HansenHH Graphic LIFA Merino Base Layer Set - Kids'
$54.73Save 31%compared to  $80.00REI OUTLET IcebreakerMerino 260 Vertex Long-Sleeve Half-Zip Herenga Base Layer Top - Women's
$99.73Save 33%compared to  $150.00REI OUTLETHelly HansenLIFA Merino Midweight 2-In-1 Graphic Half-Zip Base Layer Top - Women's
$86.73 - $89.73Save 25% - 27%compared to  $120.00REI OUTLETArtilectDarkhorse 185 Zoned Crew Base Layer Top - Men's
$109.73Save 31%compared to  $160.00REI OUTLET
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