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Long Sleeve Base Layers
(259 products)Products (259)
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CraftActive Intensity Zip Base Layer Top - Men's
$39.73Save 46%compared to  $74.95Underwear Weight:LightweightSize Type:RegularREI OUTLETOrtovox185 Rock'n'wool Long-Sleeve Base Layer Top - Women's
$76.73Save 30%compared to  $110.00Underwear Weight:LightweightSize Type:RegularREI OUTLETKari TraaLune Half-Zip Base Layer Top - Women's
$48.73Save 30%compared to  $70.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET- Top Rated
Arc'teryxIonia Merino Wool Base Layer Hoodie - Men's
$140.00Underwear Weight:MidweightSize Type:Regular, Big Arc'teryxRho Heavyweight Zip-Neck Base Layer Top - Women's
$150.00Underwear Weight:HeavyweightSize Type:Regular, PlusThe North FaceDotKnit Thermal Base Layer Set - Toddlers'
$70.00Underwear Weight:MidweightSize Type:Regular- Top Rated
Icebreaker200 Oasis Long-Sleeve Crewe Last Run Base Layer Top - Men's
$85.73Save 25%compared to  $115.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET - Top Rated
CraftCore Warm Base-Layer Set - Men's
$59.73Save 25%compared to  $79.95Underwear Weight:LightweightSize Type:BigREI OUTLET SmartwoolIntraknit Thermal Merino Quarter-Zip Base Layer Top - Men's
$55.83Save 60%compared to  $140.00Underwear Weight:LightweightSize Type:Regular- Top Rated
SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Women's Plus Sizes
$47.83Save 60%compared to  $120.00Underwear Weight:MidweightSize Type:Plus - Top Rated
Wild RyeEvie Lite Raglan Base Layer Top - Women's
$48.83Save 50%compared to  $99.00Underwear Weight:LightweightSize Type:Regular - Top Rated
REI Co-opLightweight Base Layer Half-Zip Top - Women's
$29.93Save 33%compared to  $44.95Underwear Weight:LightweightSize Type:Regular REI Co-opLightweight Base Layer Long-Sleeve Crew Top - Women's
$27.93Save 30%compared to  $39.95Underwear Weight:LightweightSize Type:Regular- Top Rated
Arc'teryxRho Lightweight Crew Neck Long-Sleeve Base Layer Top - Women's
$70.83Save 29%compared to  $100.00Underwear Weight:LightweightSize Type:Regular, Plus - Top Rated
REI Co-opLightweight Base Layer Half-Zip Top - Men's
$29.93Save 33%compared to  $44.95Underwear Weight:LightweightSize Type:Regular, Big REI Co-opLightweight Base Layer Long-Sleeve Crew Top - Men's Tall Sizes
$27.93Save 30%compared to  $39.95Underwear Weight:LightweightSize Type:TallREI Co-opLightweight Base Layer Long-Sleeve Zip-Neck Top - Men's Tall Sizes
$29.93Save 33%compared to  $44.95Underwear Weight:LightweightSize Type:Tall- Top Rated
REI Co-opLightweight Base Layer Long-Sleeve Crew Top - Women's Plus Sizes
$27.93Save 30%compared to  $39.95Underwear Weight:LightweightSize Type:Plus REI Co-opLightweight Base Layer Half-Zip Top - Women's Plus Sizes
$29.93Save 33%compared to  $44.95Underwear Weight:LightweightSize Type:Plus
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