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Women's Base Layer Tops
(143 products)Products (143)
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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
$29.83 - $59.95Underwear Weight:MidweightSize Type:Regular, PlusREI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's
$79.95Underwear Weight:LightweightSize Type:Regular- Top Rated
SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's
$56.83 - $115.00Underwear Weight:MidweightSize Type:Regular, Plus REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Women's
$39.95Underwear Weight:LightweightSize Type:Regular, Plus- Top Rated
SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Women's
$83.93 - $120.00Underwear Weight:MidweightSize Type:Regular, Plus REI Co-opLightweight Crew Base Layer Top - Women's
$29.95Underwear Weight:LightweightSize Type:Regular, Plus- Top Rated
tasc PerformanceElevation Merino T-Shirt - Women's
$49.73 - $54.73Save 30% - 37%compared to  $79.00Underwear Weight:LightweightSize Type:Regular, PlusREI OUTLET - Top Rated
REI Co-opHeavyweight Merino Base Layer Half-Zip Top - Women's
$49.83 - $104.95Underwear Weight:HeavyweightSize Type:Regular, Plus REI Co-opMerino 185 Base Layer Top - Women's
$69.95Underwear Weight:LightweightSize Type:RegularSmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Women's
$62.93 - $90.00Underwear Weight:LightweightSize Type:Regular, Plus- Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Women's
$51.83 - $105.00Underwear Weight:MidweightSize Type:Regular, Plus - Top Rated
REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Women's
$44.83 - $89.95Underwear Weight:LightweightSize Type:Regular REI Co-opLightweight Half-Zip Base Layer Top - Women's
$44.95Underwear Weight:LightweightSize Type:Regular, PlusKari TraaFryd Base Layer Top - Women's
$29.83 - $60.00Underwear Weight:MidweightSize Type:Regular- Top Rated
REI Co-opHeavyweight Merino Long-Sleeve Base Layer Crew Top - Women's
$49.83 - $99.95Underwear Weight:HeavyweightSize Type:Regular, Plus CraftCORE Dry Active Comfort Base Layer Top - Women's
$39.73Save 38%compared to  $64.95Underwear Weight:MidweightSize Type:RegularREI OUTLET- Top Rated
REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Women's Plus Sizes
$44.83 - $89.95Underwear Weight:LightweightSize Type:Plus REI Co-opLightweight Base Layer Long-Sleeve Crew Top - Women's Plus Sizes
$9.83Save 75%compared to  $39.95Underwear Weight:LightweightSize Type:Plus- Top Rated
Wild RyeHailey Half-Zip Base Layer Top - Women's
$66.83Save 50%compared to  $135.00Underwear Weight:MidweightSize 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
SmartwoolClassic Thermal Merino Crew Base Layer Top - Women's
$86.73Save 24%compared to  $115.00Underwear Weight:MidweightSize Type:Regular, PlusREI OUTLET PatagoniaCapilene Midweight Zip-Neck Base Layer Top - Women's
$99.00Underwear Weight:MidweightSize Type:RegularPatagoniaCapilene Midweight Zip-Neck Base Layer Top - Women's
$74.73Save 24%compared to  $99.00Underwear Weight:MidweightSize Type:RegularREI OUTLETREI Co-opMerino 185 Base Layer Top - Women's Plus Sizes
$16.83 - $69.95Underwear Weight:LightweightSize Type:PlusSmartwoolClassic All-Season Merino Quarter-Zip Base Layer Top - Women's
$95.00Size Type:RegularKari TraaAlma Hood Base Layer Top - Women's
$59.73Save 25%compared to  $80.00Underwear Weight:UltralightweightSize Type:RegularREI OUTLETHelly HansenHH Durawool Crew Long-Sleeve Base Layer - Women's
$90.00Underwear Weight:LightweightSize Type:RegularKari TraaSval Long-Sleeve Base Layer Top - Women's
$39.83Save 50%compared to  $80.00Underwear Weight:LightweightSize Type:Regular- Top Rated
IcebreakerMerino 260 Tech Long-Sleeve Half-Zip Base Layer Top - Women's
$66.83 - $135.00Underwear Weight:MidweightSize Type:Regular - Top Rated
Arc'teryxRho Zip-Neck Base Layer Top - Women's
$120.00Underwear Weight:LightweightSize Type:Regular, Plus - Top Rated
PatagoniaCapilene Midweight Crew Base Layer Top - Women's
$89.00Underwear Weight:MidweightSize Type:Regular, Plus Arc'teryxLana Merino Wool Crew Base Layer Top - Women's
$90.00Underwear Weight:LightweightSize Type:Regular, PlusSmartwoolIntraknit Active Long-Sleeve Base Layer Top - Women's
$110.00Underwear Weight:MidweightSize Type:RegularKari TraaEmbla Wool Base Layer Top - Women's
$60.00Underwear Weight:UltralightweightSize Type:RegularKari TraaEmbla Wool Long-Sleeve Base Layer Top - Women's
$80.00Underwear Weight:UltralightweightSize Type:RegularArms of Andes300 Lightweight Alpaca Wool Half-Zip Base Layer Top - Women's
$115.00 - $135.00Underwear Weight:LightweightSize Type:Regular- Top Rated
REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's Plus Sizes
$79.95Underwear Weight:LightweightSize Type:Plus Arc'teryxLana Merino Wool Base Layer Tank Top - Women's
$90.00Underwear Weight:LightweightSize Type:Regular, PlusSmartwoolClassic All-Season Merino T-Shirt - Women's
$55.93 - $80.00Underwear Weight:LightweightSize Type:Regular, PlusPatagoniaCapilene Thermal Weight Zip-Neck Long Underwear Top - Women's
$109.00Underwear Weight:HeavyweightSize Type:RegularHelly HansenHH Durawool T-Shirt - Women's
$80.00Underwear Weight:LightweightSize Type:RegularSmartwoolIntraknit Thermal Merino Crew Base Layer Top - Women's
$64.83 - $130.00Underwear Weight:MidweightSize Type:Regular- Top Rated
Icebreaker260 Tech Long-Sleeve Crewe Base Layer Top - Women's
$61.83 - $125.00Underwear Weight:HeavyweightSize Type:Regular, Plus Arms of Andes300 Lightweight Alpaca Wool Pullover Base Layer Hoodie - Women's
$140.00Underwear Weight:LightweightSize Type:RegularKari TraaRose Half-Zip Base Layer Top - Women's
$59.83 - $120.00Underwear Weight:MidweightSize Type:RegularArms of Andes160 Ultralight Alpaca Wool Long-Sleeve Base Layer Shirt - Women's
$85.00 - $100.00Underwear Weight:UltralightweightSize Type:Regular- Top Rated
Icebreaker200 Oasis Long-Sleeve Half-Zip Base Layer Top - Women's
$56.83 - $115.00Underwear Weight:LightweightSize Type:Regular Arms of Andes160 Ultralight Alpaca Wool Crew Neck Base Layer T-Shirt - Women's
$75.00Underwear Weight:UltralightweightSize Type:Regular- Top Rated
IcebreakerMerino 150 Tech Lite III Relaxed T-Shirt - Women's
$39.83 - $80.00Underwear Weight:LightweightSize Type:Regular - Top Rated
The North FaceSummit Series Pro 120 Crew Base Layer Top - Women's
$100.00Underwear Weight:UltralightweightSize Type:Regular, Plus Icebreaker125 Cool-Lite Merino Blend Sphere III Scoop T-Shirt - Women's
$75.00Underwear Weight:LightweightSize Type:Regular- New arrival
Arc'teryxRho Base Layer Hoody - Women's
$96.73Save 19%compared to  $120.00Underwear Weight:MidweightSize Type:RegularREI OUTLET Helly HansenHH Durawool Graphic T-Shirt - Women's
$90.00Underwear Weight:LightweightSize Type:Regular- New arrival
SmartwoolClassic Thermal Merino Base Layer Quarter-Zip - Women's
$89.73Save 25%compared to  $120.00Underwear Weight:MidweightSize Type:Regular, PlusREI OUTLET - Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Women's
$78.73Save 25%compared to  $105.00Size Type:Regular, PlusREI OUTLET Helly HansenHH Merino Half-Zip Base Layer Top - Women's
$89.73Save 28%compared to  $125.00Underwear Weight:LightweightSize Type:RegularREI OUTLETSmartwoolIntraknit Active Base Layer Crew Shirt - Women's
$76.73Save 30%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLETHelly HansenLIFA ACTIVE Stripe Crew Base Layer Top - Women's
$44.73Save 25%compared to  $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLETIcebreakerMerino 260 Vertex Long-Sleeve Crewe Glacial Flow Base Layer Top - Women's
$104.73Save 25%compared to  $140.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETKari TraaFryd Long-Sleeve Base Layer Top - Women's
$44.73Save 25%compared to  $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLETKari TraaFloke Long-Sleeve Base Layer Top - Women's
$74.73Save 25%compared to  $100.00Underwear Weight:MidweightSize Type:RegularREI OUTLETKari TraaFierce Long-Sleeve Base Layer Top - Women's
$44.73Save 25%compared to  $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLETKari TraaElse Half-Zip Base Layer Top - Women's
$76.73Save 30%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLETSmartwoolClassic Thermal Merino Half-Zip Base Layer Hoodie - Women's
$145.00Size Type:RegularSmartwoolClassic Thermal Merino Colorblock Quarter-Zip Base Layer Top - Women's
$86.93Save 30%compared to  $125.00Size Type:RegularIcebreakerMerino 250 Vertex Long-Sleeve Half-Zip Thermal Top Sedimentary - Women's
$89.73Save 40%compared to  $150.00Underwear Weight:MidweightSize Type:RegularREI OUTLETMons RoyaleCascade Merino Flex Mock-Neck Base Layer Top - Women's
$89.73Save 35%compared to  $140.00Underwear Weight:MidweightSize Type:RegularREI OUTLETHelly HansenOdin Power Stretch Half-Zip Base Layer Top - Women's
$88.73Save 40%compared to  $150.00Underwear Weight:MidweightSize Type:RegularREI OUTLETKari TraaRose Light Base Layer Top - Women's
$82.73Save 24%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLETThe North FaceFD Pro 160 Base Layer Crew Top - Women's
$70.00Underwear Weight:MidweightSize Type:RegularCraftCore Dry Base-Layer Set - Women's
$49.73Save 33%compared to  $74.95Underwear Weight:LightweightSize Type:RegularREI OUTLETOrtovox185 Merino Rock'n'wool Base Layer Top - Women's
$49.83Save 50%compared to  $100.00Underwear Weight:MidweightSize Type:RegularHelly HansenLIFA Merino Midweight Graphic Base Layer Crew Top - Women's
$110.00Underwear Weight:MidweightSize Type:RegularHelly HansenLifa Merino Midweight Base Layer Half-Zip Top - Women's
$110.00Underwear Weight:MidweightSize Type:RegularSmartwoolIntraknit Thermal Merino Pattern Crew Base Layer Top - Women's
$90.93Save 30%compared to  $130.00Underwear Weight:MidweightSize Type:RegularSmartwoolClassic Thermal Merino Lettuce Edge Crew Base Layer Top - Women's
$82.73Save 28%compared to  $115.00Underwear Weight:MidweightSize Type:RegularREI OUTLET- Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Half-Zip Thermal Base Layer Top - Women's
$86.73Save 24%compared to  $115.00Underwear Weight:MidweightSize Type:Regular, PlusREI OUTLET Terramar1.0 All-Season Lightweight Merino Wool T-Shirt - Women's
$34.73Save 30%compared to  $50.00Underwear 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 Active Graphic Crew Base Layer Top - Women's
$48.73Save 25%compared to  $65.00Underwear Weight:LightweightSize Type:RegularREI OUTLETTerramar4.0 Genesis Crew Base Layer Top - Women's
$24.73Save 29%compared to  $35.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETKari TraaVoss Cashmere Mix Half-Zip Base Layer Top - Women's
$134.73Save 25%compared to  $180.00Underwear Weight:MidweightSize Type:RegularREI OUTLETTerramar2.0 Ultra Merino Turtleneck Base Layer Top - Women's
$52.73Save 29%compared to  $75.00Underwear Weight:MidweightSize Type:RegularREI OUTLETKari TraaMalia Long-Sleeve Base Layer Top - Women's
$52.73Save 24%compared to  $70.00Underwear Weight:MidweightSize Type:Regular, PlusREI OUTLETTerramar2.0 Cloud Nine Midweight Performance Thermal Turtleneck - Women's
$35.73Save 25%compared to  $48.00Underwear Weight:MidweightSize Type:RegularREI OUTLETTerramar2.0 Cloud Nine Midweight Performance Base Layer Scoop Shirt - Women's
$33.73Save 25%compared to  $45.00Underwear Weight:MidweightSize Type:RegularREI OUTLETFree CountryForce Grid Fleece Base Layer Top - Women's
$34.73Save 36%compared to  $55.00Underwear Weight:LightweightSize Type:RegularREI OUTLETKari TraaRose Light Half-Zip Base Layer Top - Women's
$89.73Save 25%compared to  $120.00Underwear Weight:MidweightSize Type:RegularREI OUTLETIcebreakerMerino 260 Vertex Long-Sleeve Half-Zip Herenga Base Layer Top - Women's
$99.73Save 33%compared to  $150.00Size Type:RegularREI OUTLET
1–90 of 143 products
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