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Base Layer Tops
(280 products)Products (280)
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IcebreakerMerino 200 Sonebula Long-Sleeve Crewe Base Layer Top - Men's
$89.73Save 25%compared to  $120.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLETIcebreaker200 Oasis Sonebula Long-Sleeve Crewe Base Layer Top - Women's
$89.73Save 25%compared to  $120.00Underwear Weight:LightweightSize Type:RegularREI OUTLETArtilectDarkhorse 185 Zoned Quarter-Zip Base Layer Top - Men's
$116.73Save 31%compared to  $170.00Underwear Weight:MidweightSize Type:RegularREI OUTLETKari TraaVoss Cashmere Mix Half-Zip Base Layer Top - Women's
$134.73Save 25%compared to  $180.00Underwear Weight:MidweightSize Type:RegularREI OUTLETIcebreakerMerino 200 Sonebula Long-Sleeve High-Neck Base Layer Top - Women's
$93.73Save 25%compared to  $125.00Underwear Weight:MidweightSize Type:RegularREI OUTLETArtilectGoldhill 125 Zoned Crew Base Layer Top - Men's
$89.73Save 30%compared to  $130.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLETArtilectBoulder 125 Crew Long-Sleeve Base Layer Top - Women's
$82.73Save 31%compared to  $120.00Underwear Weight:LightweightSize Type:RegularREI OUTLETWild RyeEvie Raglan Base Layer Top - Women's
$69.73Save 41%compared to  $119.00Underwear Weight:LightweightSize Type:RegularREI OUTLETHelly HansenLIFA Merino Midweight Crew Base Layer Top - Women's
$74.73Save 25%compared to  $100.00Underwear Weight:MidweightSize Type:RegularREI OUTLETIcebreaker125 ZoneKnit Merino Long-Sleeve Crewe Thermal Top - Men's
$86.73 - $93.73Save 25% - 30%compared to  $125.00Underwear Weight:UltralightweightSize Type:Regular, BigREI OUTLETSeirusHeatwave Quick Body Mapped Long-Sleeve Base Layer Hoodie - Women's
$135.00Underwear Weight:MidweightSize Type:RegularIcebreakerMerino 200 Oasis Long-Sleeve Scoop Thermal Top - Women's
$78.73Save 25%compared to  $105.00Underwear Weight:LightweightSize Type:RegularREI OUTLETHelly HansenHH Merino Half-Zip Base Layer Top - Women's
$89.73Save 28%compared to  $125.00Underwear Weight:LightweightSize Type:RegularREI OUTLETArtilectDarkhorse 185 Zoned Crew Base Layer Top - Women's
$109.73Save 31%compared to  $160.00Underwear Weight:MidweightSize Type:RegularREI OUTLETKari TraaFryd Long-Sleeve Base Layer Top - Women's
$37.73 - $41.73Save 30% - 31%compared to  $55.00 - $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLETHelly HansenHH Lifa Active Crew Base Layer Top - Women's
$44.73Save 25%compared to  $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLETKari TraaLune Long-Sleeve Base Layer Top - Women's
$48.73Save 25%compared to  $65.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETHelly HansenLIFA Merino Midweight Half-Zip Base Layer Top - Women's
$79.73 - $82.73Save 24% - 27%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLETKari TraaElse Half-Zip Base Layer Top - Women's
$76.73Save 30%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLETKari TraaSummer Wool Long-Sleeve Base Layer Top - Women's
$56.73Save 29%compared to  $80.00Underwear Weight:LightweightSize Type:RegularREI OUTLET- Top Rated
Arc'teryxRho Heavyweight Zip-Neck Base Layer Top - Men's
$99.93 - $140.00Underwear Weight:HeavyweightSize Type:Regular, Big ArtilectFlatiron 185 Quarter-Zip Base Layer Top - Women's
$109.73Save 31%compared to  $160.00Underwear Weight:MidweightSize Type:RegularREI OUTLETFree CountryForce Grid Fleece Base Layer Top - Men's
$29.73Save 33%compared to  $45.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLETKari TraaEdith Half-Zip Base Layer Top - Women's
$76.73Save 30%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLETKari TraaRose Light Base Layer Top - Women's
$89.73Save 25%compared to  $120.00Underwear Weight:MidweightSize Type:RegularREI OUTLETHelly HansenLifa Active Graphic Crew Base Layer Top - Women's
$48.73Save 25%compared to  $65.00Underwear Weight:LightweightSize Type:RegularREI OUTLETMons RoyaleCascade Merino Flex Mock-Neck Base Layer Top - Women's
$89.73Save 35%compared to  $140.00Underwear Weight:MidweightSize Type:RegularREI OUTLETSmartwoolIntraknit Active Base Layer Crew Shirt - Women's
$76.73Save 30%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLETIcebreakerMerino 260 Vertex Long-Sleeve Crewe Natural Shades Base Layer Top - Men's
$104.73Save 25%compared to  $140.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETKari TraaJuliane Wool Half-Zip Base Layer Top - Women's
$104.73Save 25%compared to  $140.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
181–210 of 280 products
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