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- Sale Ends Oct 20IcebreakerMerino 200 ZoneKnit Long-Sleeve Half-Zip Thermal Base Layer Top - Women's$78.99Save 50%compared to  $160.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Kari TraaVilma Long-Sleeve Base Layer Top - Women's$67.73Save 24%compared to  $90.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Icebreaker125 ZoneKnit Crewe Base Layer Shirt - Women's$84.73Save 26%compared to  $115.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Icebreaker200 Oasis Sonebula Long-Sleeve Crewe Base Layer Top - Women's$89.73Save 25%compared to  $120.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Kari TraaRose Light Base Layer Top - Women's$82.73Save 24%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Icebreaker125 ZoneKnit Thermal Base Layer Leggings - Women's$86.73Save 30%compared to  $125.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Kari TraaFloke Base Layer Pants - Women's$64.73Save 35%compared to  $100.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Kari TraaVoss Cashmere Mix Half-Zip Base Layer Top - Women's$116.73Save 35%compared to  $180.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- IcebreakerMerino 260 Vertex Natural Shades Base Layer Leggings - Women's$104.73Save 25%compared to  $140.00Size Type:RegularREI OUTLET
- IcebreakerMerino 200 Oasis Long-Sleeve Crewe Macro Forms Base Layer Top - Women's$85.73Save 25%compared to  $115.00Underwear 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
- Kari TraaMina Base Layer Pants - Women's$42.73Save 28%compared to  $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Kari TraaKlara High-Waisted Base Layer Pants - Women's$62.73 - $66.73Save 25% - 30%compared to  $90.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Kari TraaFaith Half-Zip Base Layer Top - Women'sNew arrival$86.73Save 27%compared to  $120.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- Kari TraaRose Long-Sleeve Base Layer Top - Women's$79.73Save 27%compared to  $110.00Underwear Weight:HeavyweightSize Type:Regular, PlusREI OUTLET
- Kari TraaSara Half-Zip Base Layer Top - Women'sNew arrival$79.73Save 27%compared to  $110.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- Kari TraaFierce Long-Sleeve Base Layer Top - Women's$46.73Save 29%compared to  $66.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Kari TraaElse Long-Sleeve Base Layer Top - Women'sNew arrival$69.73Save 30%compared to  $100.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Icebreaker260 ZoneKnit Long-Sleeve Crewe Base Layer Top - Women'sNew arrival$119.73Save 27%compared to  $165.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Icebreaker260 ZoneKnit Base Layer Leggings - Women'sNew arrival$119.73Save 27%compared to  $165.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- IcebreakerSiren Long-Sleeve Sweetheart Base Layer Shirt - Women'sNew arrival$62.73Save 26%compared to  $85.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- IcebreakerFastray II 20" High-Rise 3/4 Base Layer Tights - Women'sNew arrival$82.73Save 24%compared to  $110.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
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