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Lightweight Base Layers
(158 products)Products (158)
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Helly HansenHH Merino Half-Zip Base Layer Top - Women's
$89.73Save 28%compared to  $125.00Underwear Weight:LightweightSize Type:RegularREI OUTLETKari TraaFryd Base Layer Pants - Women's
$37.73 - $41.73Save 30% - 37%compared to  $55.00 - $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLETIcebreakerMerino 200 Oasis Long-Sleeve Scoop Thermal Top - Women's
$78.73Save 25%compared to  $105.00Underwear 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 TraaFryd Long-Sleeve Base Layer Top - Women's
$37.73 - $41.73Save 30% - 31%compared to  $55.00 - $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLETKari TraaSummer Wool Long-Sleeve Base Layer Top - Women's
$56.73Save 29%compared to  $80.00Underwear Weight:LightweightSize Type:RegularREI OUTLETKari TraaKlara High-Waisted Base Layer Pants - Women's
$62.73Save 30%compared to  $90.00Underwear Weight:LightweightSize Type:RegularREI OUTLETFree CountryForce Grid Fleece Base Layer Top - Men's
$29.73Save 33%compared to  $45.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLETFree CountryMicrotech Heat Cocaber Base Layer Top - Men's
$26.73Save 33%compared to  $40.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLETKari TraaSummer Wool Base Layer Pants - Women's
$49.73Save 28%compared to  $70.00Underwear Weight:LightweightSize Type:RegularREI OUTLETHelly HansenLifa Active Graphic Crew Base Layer Top - Women's
$48.73Save 25%compared to  $65.00Underwear Weight:LightweightSize Type:RegularREI OUTLETFree CountryCloud Knit Base Layer Bottoms - Women's
$31.73Save 29%compared to  $45.00Underwear Weight:LightweightSize Type:RegularREI OUTLETWild RyeJane Leggings - Women's
$64.73Save 40%compared to  $109.00Underwear Weight:LightweightSize Type:RegularREI OUTLETKari TraaFierce Base Layer Pants - Women's
$39.73Save 33%compared to  $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLETKari TraaElenore Base Layer Leggings - Women's
$63.73Save 25%compared to  $85.00Underwear Weight:LightweightSize Type:RegularREI OUTLETtasc PerformanceElevation Merino Base Layer Bottoms - Men's
$54.73Save 30%compared to  $79.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLETIcebreakerMerino 175 Everyday Long-Sleeve Crewe Thermal Top - Men's
$63.73Save 25%compared to  $85.00Underwear Weight:LightweightSize Type:RegularREI OUTLETFree CountryForce Grid Fleece Base Layer Bottoms - Men's
$29.73Save 33%compared to  $45.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLETCraftActive Intensity Base Layer Pants - Women's
$31.73Save 42%compared to  $54.95Underwear Weight:LightweightSize Type:RegularREI OUTLETHelly HansenLIFA ACTIVE Stripe Crew Base Layer Top - Women's
$44.73Save 25%compared to  $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLETKari TraaFryd Base Layer Pants - Women's
$32.73 - $44.73Save 25% - 40%compared to  $55.00 - $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLET- Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's
$73.73Save 29%compared to  $105.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLET CraftActive Intensity Zip Base Layer Top - Women's
$54.73Save 31%compared to  $79.95Underwear Weight:LightweightSize Type:RegularREI OUTLETHelly HansenLifa Active Base Layer Bottoms - Women's
$39.73Save 27%compared to  $55.00Underwear Weight:LightweightSize Type:RegularREI OUTLET- Top Rated
Arc'teryxRho Hoodie Base Layer Top - Women's
$130.00Underwear Weight:LightweightSize Type:Regular Free CountryMicrotech Heat Cocaber Base Layer Bottoms - Men's
$26.73Save 33%compared to  $40.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLETOrtovox185 Rock'n'wool Long-Sleeve Base Layer Top - Men's
$76.73Save 30%compared to  $110.00Underwear Weight:LightweightSize Type:RegularREI OUTLET- Top Rated
Arc'teryxRho LT Crew Neck Base Layer Top - Men's
$100.00Underwear Weight:LightweightSize Type:Regular, Big Arc'teryxRho Base Layer Bottoms - Women's
$49.83 - $100.00Underwear Weight:LightweightSize Type:Regular, PlusTerramarCloud Nine Scoop Neck Crew Base Layer Top - Women's
$26.73Save 40%compared to  $45.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
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