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- Sale Ends Dec 1SmartwoolIntraknit Thermal Merino Base Layer Hoodie - Women's$134.99Save 25%compared to  $180.00Underwear Weight:MidweightSize Type:Regular
- Terramar3.0 Thermawool Half-Zip Base Layer Top - Women's$56.73Save 24%compared to  $75.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Helly HansenVerglas Half-Zip Top - Women's$63.73Save 25%compared to  $85.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Sale Ends Nov 24Kari TraaRose High-Waisted Base Layer Pants - Women's$97.49Save 25%compared to  $130.00Underwear Weight:LightweightSize Type:Regular
- SpraywayEffra Jacket Base Layer Top - Women's$42.73Save 34%compared to  $64.95Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- Sale Ends Dec 1SmartwoolClassic All-Season Merino Quarter-Zip Base Layer Top - Women's$71.19Save 25%compared to  $95.00Size Type:Regular
- Sale Ends Dec 1SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Women's$97.49Save 25%compared to  $130.00Underwear Weight:LightweightSize Type:Regular
- SmartwoolClassic Thermal Merino Lettuce Edge Base Layer Bottoms - Women's$82.73Save 28%compared to  $115.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Kari TraaVilma Long-Sleeve Base Layer Top - Women's$66.73Save 25%compared to  $90.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Sale Ends Dec 8Icebreaker260 Tech High-Rise Base Layer Leggings - Women'sTop Rated$93.69Save 25%compared to  $125.00Underwear Weight:MidweightSize Type:Regular
- Kari TraaElse Base Layer Pants - Women's$74.73Save 25%compared to  $100.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Terramar2.0 Cloud Nine Midweight Performance Thermal Turtleneck - Women's$26.73Save 44%compared to  $48.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's Plus Sizes$86.19 - $89.99Save 25%compared to  $115.00 - $120.00Underwear Weight:MidweightSize Type:Plus
- Helly HansenLifa Merino Midweight Graphic Base Layer Top - Women'sTop Rated$79.73 - $82.73Save 24% - 27%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- TerramarC-Suite Mammoth Sherpa Fleece Mid-Layer Joggers - Women's$51.73Save 35%compared to  $80.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Helly HansenLIFA Merino Midweight Balaclava Hoodie - Women's$106.73Save 28%compared to  $150.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Sale Ends Dec 1SmartwoolClassic Thermal Merino Colorblock Crew Base Layer Top - Women's$97.49Save 25%compared to  $130.00Underwear Weight:MidweightSize Type:Regular
- Sale Ends Nov 24REI Co-opMerino 185 Base Layer Bottoms - Women's Plus Sizes$55.89Save 30%compared to  $79.95Underwear Weight:LightweightSize Type:Plus
- Kari TraaVilma Base Layer Pants - Women's$66.73Save 25%compared to  $90.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Kari TraaRose Base Layer Hoodie - Women's$96.73Save 25%compared to  $130.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- Sale Ends Dec 8IcebreakerSiren Sweetheart Long Underwear Top - Women's$63.69Save 25%compared to  $85.00Underwear Weight:LightweightSize Type:Regular
- Sale Ends Nov 24Kari TraaSilja 2.0 Base Layer Pants - Women's$82.49Save 25%compared to  $110.00Underwear Weight:HeavyweightSize Type:Regular
- Terramar2.0 Cloud Nine Midweight Base Layer Capri Pants - Women's$28.73Save 28%compared to  $40.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Kari TraaMalia Base Layer Pants - Women's$48.73Save 30%compared to  $70.00Underwear Weight:MidweightSize Type:Regular, PlusREI OUTLET
- Free CountryMicrotech Heat Cocarber Base Layer Top - Women's$34.73Save 30%compared to  $50.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Sale Ends Nov 24Kari TraaSmekker Half-Zip Base Layer Top - Women's$104.99Save 25%compared to  $140.00Underwear Weight:LightweightSize Type:Regular
- SmartwoolIntraknit Thermal Max Merino Base Layer Pattern Hoodie - Women's$114.73Save 30%compared to  $165.00Size Type:RegularREI OUTLET
- Hot ChillysPeach Skins Base Layer Bottoms - Kids'$29.73Save 33%compared to  $45.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Sale Ends Nov 24REI Co-opMerino 185 Long-Sleeve Half-Zip Base Layer Top - Women's Plus Sizes$62.89Save 30%compared to  $89.95Underwear Weight:LightweightSize Type:Plus
- Kari TraaLucie Half-Zip Base Layer Top - Women's$66.73Save 25%compared to  $90.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
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