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Women's Base Layer Tops
(143 products)Products (143)
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- SmartwoolClassic All-Season Merino Base Layer Long-Sleeve Shirt - Women's$66.73Save 25%compared to  $90.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- SmartwoolIntraknit Thermal Merino Pattern Crew Base Layer Top - Women's$90.93Save 30%compared to  $130.00Underwear Weight:MidweightSize Type:Regular
- Icebreaker300 MerinoFine Long-Sleeve Roll-Neck Base Layer Top - Women's$164.73Save 25%compared to  $220.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Wild RyeEvie Raglan Base Layer Top - Women's$69.73Save 41%compared to  $119.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Kari TraaJuliane Wool Long-Sleeve Base Layer Top - Women's$90.73Save 30%compared to  $130.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- Wild RyeHailey Half-Zip Base Layer Top - Women's$69.73Save 41%compared to  $119.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Kari TraaFryd Long-Sleeve Base Layer Top - Women's$44.73Save 25%compared to  $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Mons RoyaleCascade Merino Flex Mock-Neck Base Layer Top - Women's$89.73Save 35%compared to  $140.00Underwear 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
- Terramar2.0 Ultra Merino Turtleneck Base Layer Top - Women's$52.73Save 29%compared to  $75.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- CraftActive Intensity Zip Base Layer Top - Women's$54.73Save 31%compared to  $79.95Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Kari TraaFloke Long-Sleeve Base Layer Top - Women's$74.73Save 25%compared to  $100.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Kari TraaRose Light Base Layer Top - Women's$82.73Save 24%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Helly HansenLIFA Merino Midweight 2-In-1 Base Layer Hoodie - Women's$89.73Save 25%compared to  $120.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Helly HansenLifa Merino Midweight Base Layer Half-Zip Top - Women's$110.00Underwear Weight:MidweightSize Type:Regular
- Kari TraaEdith Half-Zip Base Layer Top - Women's$82.73Save 24%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- IcebreakerMerino Blend 260 ZoneKnit Seamless Long-Sleeve Crew Base Layer Top - Women's$150.00Underwear Weight:MidweightSize Type:Regular
- Helly HansenLIFA Merino Midweight Balaclava Base Layer Hoodie - Women's$150.00Underwear Weight:MidweightSize Type:Regular
- Helly HansenLIFA Merino Midweight Graphic Base Layer Crew Top - Women's$110.00Underwear Weight:MidweightSize Type:Regular
- Helly HansenOdin Power Stretch Half-Zip Base Layer Top - Women's$88.73Save 40%compared to  $150.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Kari TraaFryd Long-Sleeve Base Layer Top - Women's$34.73Save 36%compared to  $55.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Arc'teryxRho Lightweight Crew Neck Long-Sleeve Base Layer Top - Women'sTop Rated$49.83Save 50%compared to  $100.00Underwear Weight:LightweightSize Type:Regular
- Outdoor ResearchAlpine Onset Merino Half-Zip Base Layer Top - Women's$54.73Save 49%compared to  $109.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
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