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Women's Base Layer Tops
(137 products)Products (137)
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- Terramar2.0 Cloud Nine Midweight Performance Thermal Turtleneck - Women's$32.73Save 31%compared to  $48.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Arc'teryxRho Zip-Neck Base Layer Top - Women'sTop Rated$120.00Underwear Weight:LightweightSize Type:Regular, Plus
- SeirusHeatwave Body Mapped Quarter-Zip Long-Sleeve Base Layer Top - Women's$69.83Save 50%compared to  $140.00Underwear Weight:MidweightSize Type:Regular
- HalfdaysJohnson Base Layer Top - Women's$62.93Save 25%compared to  $85.00Underwear Weight:UltralightweightSize Type:Plus
- SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Women's$130.00Underwear Weight:MidweightSize Type:Regular
- ArtilectFlatiron 185 Quarter-Zip Base Layer Top - Women's$99.73Save 37%compared to  $160.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- PatagoniaCapilene Midweight Zip-Neck Base Layer Top - Women's$99.00Underwear Weight:MidweightSize Type:Regular
- Arms of Andes300 Lightweight Alpaca Wool Half-Zip Base Layer Top - Women's$115.00 - $135.00Underwear Weight:LightweightSize Type:Regular
- Kari TraaVoss Cashmere Mix Half-Zip Base Layer Top - Women's$116.73Save 35%compared to  $180.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Helly HansenHH Durawool T-Shirt - Women's$80.00Underwear Weight:LightweightSize Type:Regular
- Sweaty BettyHigh-Neck Jacquard Base Layer Top - Women'sTop Rated$82.73Save 29%compared to  $118.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Icebreaker200 Oasis Long-Sleeve Half-Zip Base Layer Top - Women'sTop Rated$115.00Underwear Weight:LightweightSize Type:Regular
- Arc'teryxRho Hoody Base Layer Top - Women'sTop Rated$104.93Save 19%compared to  $130.00Underwear Weight:LightweightSize Type:Regular
- Helly HansenLIFA Merino Midweight Crew Base Layer Top - Women's$74.73Save 25%compared to  $100.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Helly HansenHH Durawool Crew Long-Sleeve Base Layer - Women's$90.00Underwear Weight:LightweightSize Type:Regular
- PatagoniaCapilene Thermal Weight Zip-Neck Long Underwear Top - Women's$109.00Underwear Weight:HeavyweightSize Type:Regular
- Arms of Andes300 Lightweight Alpaca Wool Pullover Base Layer Hoodie - Women's$140.00Underwear Weight:LightweightSize Type:Regular
- Arms of Andes160 Ultralight Alpaca Wool Long-Sleeve Base Layer Shirt - Women's$85.00 - $100.00Underwear Weight:UltralightweightSize Type:Regular
- The North FaceSummit Series Pro 120 Crew Base Layer Top - Women'sTop Rated$100.00Underwear Weight:UltralightweightSize Type:Regular, Plus
- Wild RyeHailey Half-Zip Base Layer Top - Women's$69.73Save 41%compared to  $119.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Helly HansenHH Durawool Graphic T-Shirt - Women's$90.00Underwear Weight:LightweightSize Type:Regular
- Kari TraaJuliane Wool Long-Sleeve Base Layer Top - Women's$90.73Save 30%compared to  $130.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- SmartwoolIntraknit Thermal Merino Pattern Crew Base Layer Top - Women's$90.93Save 30%compared to  $130.00Underwear Weight:MidweightSize Type:Regular
- IcebreakerMerino 150 Tech Lite III Relaxed T-Shirt - Women's$80.00Underwear Weight:LightweightSize Type:Regular
- Arc'teryxKyanite Base Layer Crew Top - Women's$96.73Save 19%compared to  $120.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- Outdoor ResearchAlpine Onset Merino Half-Zip Base Layer Top - Women's$54.73Save 49%compared to  $109.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Kari TraaRose Half-Zip Base Layer Top - Women'sTop Rated$89.73Save 25%compared to  $120.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- Kari TraaFryd Long-Sleeve Base Layer Top - Women's$44.73Save 18%compared to  $55.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Icebreaker300 MerinoFine Long-Sleeve Roll-Neck Base Layer Top - Women's$164.73Save 25%compared to  $220.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- IcebreakerMerino 250 Vertex Long-Sleeve Half-Zip Thermal Top Sedimentary - Women's$89.73Save 40%compared to  $150.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
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