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Base Layer Tops
(242 products)Products (242)
Sort: Best Match
- Top Rated
REI Co-opMidweight Long-Sleeve Base Layer Top - Men's
$54.95Underwear Weight:MidweightSize Type:Regular, Big, Tall - Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's
$115.00Underwear Weight:MidweightSize Type:Regular, Plus - Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Men's
$115.00Underwear Weight:MidweightSize Type:Regular, Big REI Co-opMidweight Long-Sleeve Base Layer Top - Women's
$54.95Underwear Weight:MidweightSize Type:Regular, PlusREI Co-opMidweight Base Layer Half-Zip Top - Women's
$59.95Underwear Weight:MidweightSize Type:Regular, Plus- Top Rated
SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Women's
$120.00Underwear Weight:MidweightSize Type:Regular, Plus ArtilectBoulder 125 Crew Base Layer Top - Men's
$59.83Save 50%compared to  $120.00Underwear Weight:LightweightSize Type:Regular, Big- Top Rated
REI Co-opMidweight Base Layer Half-Zip Top - Men's
$59.95Underwear Weight:MidweightSize Type:Regular, Big, Tall - Top Rated
REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Women's
$99.95Underwear Weight:HeavyweightSize Type:Regular, Plus - Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Women's
$72.93 - $105.00Underwear Weight:MidweightSize Type:Regular, Plus Helly HansenLIFA Merino Midweight Balaclava Base Layer Hoodie - Women's
$150.00Underwear Weight:MidweightSize Type:RegularREI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's
$39.83 - $79.95Underwear Weight:LightweightSize Type:Regular- Top Rated
Arc'teryxRho Merino Wool Crew Neck Base Layer Top - Men's
$120.00Underwear Weight:MidweightSize Type:Regular, Big - Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's
$72.93 - $105.00Underwear Weight:MidweightSize Type:Regular, Big - Top Rated
ArtilectBoulder 125 Quarter-Zip Base Layer Top - Men's
$64.83Save 50%compared to  $130.00Underwear Weight:LightweightSize Type:Regular - Top Rated
REI Co-opHeavyweight Merino Base Layer Half-Zip Top - Women's
$104.95Underwear Weight:HeavyweightSize Type:Regular, Plus Helly HansenLIFA Merino Midweight Half-Zip Base Layer Top - Women's
$79.73 - $82.73Save 24% - 27%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLET- Top Rated
PatagoniaCapilene Midweight Crew Base Layer Top - Men's
$61.93 - $89.00Underwear Weight:MidweightSize Type:Regular, Big - Top Rated
IcebreakerMerino 260 Tech Long-Sleeve Crewe Thermal Top - Men's
$86.93 - $125.00Underwear Weight:HeavyweightSize Type:Regular, Big - New arrival
Terramar2.0 Ultra Merino Turtleneck Base Layer Top - Women's
$52.73Save 29%compared to  $75.00Underwear Weight:MidweightSize Type:RegularREI OUTLET REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Women's
$39.95Underwear Weight:LightweightSize Type:Regular, PlusREI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Men's
$99.95Underwear Weight:HeavyweightSize Type:Regular, Big, TallREI Co-opLightweight Long-Sleeve Crew Base Layer Top - Men's
$39.95Underwear Weight:LightweightSize Type:Regular, Big, Talltasc PerformanceElevation Merino T-Shirt - Men's
$54.73Save 30%compared to  $79.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLET- Top Rated
IcebreakerMerino 260 Tech Long-Sleeve Half-Zip Base Layer Top - Men's
$93.93 - $135.00Underwear Weight:MidweightSize Type:Regular, Big SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's
$130.00Underwear Weight:MidweightSize Type:Regular, BigSmartwoolClassic All-Season Merino Quarter-Zip Base Layer Top - Men's
$95.00Underwear Weight:MidweightSize Type:Regular, Big- Top Rated
BurtonMidweight X Base Layer Long Neck Hoodie - Women's
$89.95Underwear Weight:MidweightSize Type:Regular - Top Rated
REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Men's
$89.95Underwear Weight:LightweightSize Type:Regular, Big - Top Rated
REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's
$79.95Underwear Weight:LightweightSize Type:Regular, Big
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