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Long Sleeve Base Layers
(233 products)Products (233)
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REI Co-opMidweight Long-Sleeve Base Layer Top - Women's
$26.83 - $54.95Underwear Weight:MidweightSize Type:Regular, PlusREI Co-opMidweight Long-Sleeve Base Layer Top - Men's
$54.95Underwear Weight:MidweightSize Type:Regular, Big, Tall- Top Rated
REI Co-opMidweight Base Layer Half-Zip Top - Men's
$59.95Underwear Weight:MidweightSize Type:Regular, Big, Tall REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's
$79.95Underwear Weight:LightweightSize Type:RegularREI Co-opMidweight Base Layer Crew Top - Kids'
$34.95Underwear Weight:MidweightSize Type:RegularREI Co-opMidweight Base Layer Half-Zip Top - Women's
$59.95Underwear Weight:MidweightSize Type:Regular, Plus- Top Rated
REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's
$79.95Underwear Weight:LightweightSize Type:Regular, Big - Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's
$115.00Underwear Weight:MidweightSize Type:Regular, Plus REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Men's
$99.95Underwear Weight:HeavyweightSize Type:Regular, Big, Tall- Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
$115.00Underwear Weight:MidweightSize Type:Regular, Big tasc PerformanceElevation Merino T-Shirt - Men's
$54.73Save 30%compared to  $79.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLET- Top Rated
REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Women's
$99.95Underwear Weight:HeavyweightSize Type:Regular, Plus - Top Rated
REI Co-opHeavyweight Merino Base Layer Half-Zip Top - Women's
$104.95Underwear Weight:HeavyweightSize Type:Regular, Plus - Top Rated
SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Women's
$120.00Underwear Weight:MidweightSize Type:Regular, Plus - Top Rated
PatagoniaCapilene Midweight Crew Base Layer Top - Men's
$61.93 - $89.00Underwear Weight:MidweightSize Type:Regular, Big - Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's
$105.00Underwear Weight:MidweightSize Type:Regular, Big - Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Women's
$41.83 - $105.00Underwear Weight:MidweightSize Type:Regular, Plus SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Men's
$120.00Underwear Weight:MidweightSize Type:Regular, Big- Top Rated
REI Co-opLightweight Base Layer Crew Top - Kids'
$20.93Save 30%compared to  $29.95Underwear Weight:LightweightSize Type:Regular - Top Rated
IcebreakerMerino 260 Tech Long-Sleeve Crewe Thermal Top - Men's
$125.00Underwear Weight:HeavyweightSize Type:Regular, Big - Top Rated
Arc'teryxRho LT Crew Neck Base Layer Top - Men's
$100.00Underwear Weight:LightweightSize Type:Regular, Big SmartwoolIntraknit Thermal Merino Base Layer Quarter-Zip Top - Men's
$140.00Underwear Weight:MidweightSize Type:Regular, BigSmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men's
$90.00Underwear Weight:LightweightSize Type:Regular, Big- Top Rated
Arc'teryxIonia Merino Wool Base Layer Hoodie - Men's
$140.00Underwear Weight:MidweightSize Type:Regular, Big SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Women's
$90.00Underwear Weight:LightweightSize Type:Regular, Plus- New arrival
REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Men's
$39.95Underwear Weight:LightweightSize Type:Regular, Big, Tall - Top Rated
REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's
$89.95Underwear Weight:LightweightSize Type:Regular, Big - Top Rated
Icebreaker200 Oasis Long-Sleeve Half-Zip Base Layer Top - Men's
$115.00Underwear Weight:MidweightSize Type:Regular, Big - Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Cloud Dye Base Layer Top - Women's
$115.00Underwear Weight:MidweightSize Type:Regular Helly HansenLIFA Merino Midweight Base Layer Set - Kids'
$100.00Underwear Weight:MidweightSize Type:Regular
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