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Base Layer Tops
(214 products)Products (214)
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IcebreakerMerino 260 Vertex Long-Sleeve Crewe Thermal Base Layer Top - Women's
$99.73Save 28%compared to  $140.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETIcebreaker125 ZoneKnit Long-Sleeve Crewe Base Layer Thermal Top - Women's
$93.73Save 25%compared to  $125.00Underwear Weight:LightweightSize Type:RegularREI OUTLETArc'teryxKyanite Base Layer Crew Top - Women's
$72.83Save 39%compared to  $120.00Underwear Weight:HeavyweightSize Type:RegularKari TraaSmekker Long-Sleeve Base Layer Top - Women's
$89.73Save 25%compared to  $120.00Underwear Weight:LightweightSize Type:RegularREI OUTLETHelly HansenLIFA Merino Midweight Half-Zip Base Layer Top - Women's
$82.73Save 24%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLETArtilectDarkhorse 185 Zoned Quarter-Zip Base Layer Top - Women's
$116.73Save 31%compared to  $170.00Underwear Weight:MidweightSize Type:RegularREI OUTLETSpraywayEffra Hoody Base Layer Top - Women's
$49.73Save 28%compared to  $69.95Underwear Weight:HeavyweightSize Type:Regular, PlusREI OUTLETSpraywayEffra Crew Base Layer Top - Women's
$36.73Save 26%compared to  $49.95Underwear Weight:HeavyweightSize Type:Regular, PlusREI OUTLETIcebreakerMerino 200 ZoneKnit Long-Sleeve Half-Zip Thermal Base Layer Top - Women's
$119.73Save 25%compared to  $160.00Underwear Weight:MidweightSize Type:RegularREI OUTLETIcebreaker125 ZoneKnit Crewe Base Layer Shirt - Women's
$86.73Save 24%compared to  $115.00Underwear Weight:LightweightSize Type:RegularREI OUTLET- Top Rated
IcebreakerMerino 125 ZoneKnit Long-Sleeve Half-Zip Base Layer Top - Men's
$99.73Save 26%compared to  $135.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLET Icebreaker125 ZoneKnit Crewe Base Layer Shirt - Men's
$86.73Save 24%compared to  $115.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLETHelly HansenLIFA Merino Midweight Balaclava Base Layer Hoodie - Women's
$104.73Save 30%compared to  $150.00Underwear Weight:MidweightSize Type:RegularREI OUTLET- Top Rated
Arc'teryxRho Merino Wool Crew Neck Base Layer Top - Men's
$84.83Save 29%compared to  $120.00Underwear Weight:MidweightSize Type:Big, Regular - Top Rated
BurtonMidweight X Base Layer Long Neck Hoodie - Women's
$44.83Save 50%compared to  $89.95Underwear Weight:MidweightSize Type:Regular Kari TraaFaith Half-Zip Base Layer Top - Women's
$59.83Save 50%compared to  $120.00Underwear Weight:HeavyweightSize Type:RegularSeirusHeatwave Body Mapped Quarter-Zip Long-Sleeve Base Layer Top - Women's
$69.83Save 50%compared to  $140.00Underwear Weight:MidweightSize Type:RegularSmartwoolIntraknit Thermal Merino Colorblock Crew Base Layer Top - Men's
$64.83Save 50%compared to  $130.00Underwear Weight:LightweightSize Type:RegularSmartwoolIntraknit Thermal Merino Colorblock Quarter-Zip Base Layer Top - Women's
$97.93Save 30%compared to  $140.00Size Type:Regular- Top Rated
Arc'teryxRho Heavyweight Zip-Neck Base Layer Top - Men's
$98.83Save 29%compared to  $140.00Underwear Weight:HeavyweightSize Type:Regular, Big BurtonMidweight Base Layer Crew Top - Women's
$31.83Save 50%compared to  $64.95Underwear Weight:MidweightSize Type:RegularIcebreaker125 ZoneKnit Long-Sleeve Crewe Base Layer Top - Women's
$61.83Save 50%compared to  $125.00Underwear Weight:LightweightSize Type:RegularHalfdaysJohnson Base Layer Top - Women's
$62.93Save 25%compared to  $85.00Underwear Weight:UltralightweightSize Type:Regular, PlusKari TraaSara Half-Zip Base Layer Top - Women's
$54.83Save 50%compared to  $110.00Underwear Weight:HeavyweightSize Type:Regular- Top Rated
Arc'teryxRho Hoody Base Layer Top - Women's
$104.93Save 19%compared to  $130.00Underwear Weight:LightweightSize Type:Regular Arc'teryxRho Merino Wool Zip-Neck Base Layer Top - Men's
$98.83Save 29%compared to  $140.00Underwear Weight:MidweightSize Type:Regular, BigSmartwoolClassic Thermal Merino Colorblock Crew Base Layer Top - Men's
$59.83Save 50%compared to  $120.00Size Type:Regular- Top Rated
REI Co-opMidweight Base Layer Zip-Neck Top - Kids'
$19.83Save 50%compared to  $39.95Underwear Weight:MidweightSize Type:Regular SeirusHeatwave All Season Reversible Long-Sleeve Base Layer Top - Women's
$36.83Save 50%compared to  $75.00Underwear Weight:LightweightSize Type:Regular- Top Rated
Wild RyeHailey Half-Zip Base Layer Top - Women's
$66.83Save 50%compared to  $135.00Underwear Weight:MidweightSize Type:Regular, Plus
181–210 of 214 products
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