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Base Layer Tops
(241 products)Products (241)
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- SmartwoolIntraknit Thermal Max Merino Base Layer Pattern Hoodie - Women's$114.73Save 30%compared to  $165.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Size Type:RegularREI OUTLET
- Kari TraaFryd Long-Sleeve Base Layer Top - Women's$40.73Save 32%compared to  $60.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:LightweightSize Type:Regular, PlusREI OUTLET
- SmartwoolIntraknit Thermal Merino Colorblock Quarter-Zip Base Layer Top - Women's$140.00Underwear Weight:MidweightSize Type:Regular
- Kari TraaFryd Half-Zip Base Layer Top - Women's$48.73Save 26%compared to  $66.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:LightweightSize Type:Regular, PlusREI OUTLET
- Icebreaker125 ZoneKnit Long-Sleeve Crewe Base Layer Thermal Top - Women's$93.73Save 25%compared to  $125.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Terramar3.0 Thermawool Crew Base Layer Top - Women's$49.73Save 28%compared to  $70.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Hot ChillysOriginals Print Base Layer Crew - Kids'$39.73Save 27%compared to  $55.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Kari TraaRose Half-Zip Base Layer Top - Women'sTop Rated$89.73Save 25%compared to  $120.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:HeavyweightSize Type:Regular, PlusREI OUTLET
- StioBasisPeak Wool Midweight Half-Zip Base Layer Top - Women's$149.00Underwear Weight:MidweightSize Type:Regular
- SmartwoolClassic Thermal Merino Colorblock Crew Base Layer Top - Women's$130.00Underwear Weight:MidweightSize Type:Regular
- SpraywayEffra Jacket Base Layer Top - Women's$42.73Save 34%compared to  $64.95Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- FP MovementMyoko Base Layer Top - Women's$98.00Underwear Weight:LightweightSize Type:Regular
- IcebreakerSiren Sweetheart Long Underwear Top - Women's$85.00Underwear Weight:LightweightSize Type:Regular
- Hot ChillysOriginals Solid Base Layer Crew - Kids'$34.73Save 26%compared to  $47.50Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:MidweightSize Type:RegularREI OUTLET
- CraftCORE Dry Active Comfort Base Layer Top - Women's$39.73Save 38%compared to  $64.95Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:MidweightSize Type:RegularREI OUTLET
- PatagoniaCapilene Thermal Weight Zip-Neck Long Underwear Top - Women's$109.00Underwear Weight:HeavyweightSize Type:Regular
- IcebreakerMerino 260 Vertex Long-Sleeve Crewe Natural Shades Base Layer Top - Women's$104.73Save 25%compared to  $140.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- Helly HansenLIFA Merino Midweight Graphic Crew Base Layer - Women's$79.73Save 27%compared to  $110.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Free CountryMicrotech Heat Cocarber Base Layer Top - Women's$34.73Save 30%compared to  $50.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Kari TraaAlma Hood Base Layer Top - Women's$59.73Save 25%compared to  $80.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:UltralightweightSize Type:RegularREI OUTLET
- SpraywayEffra Hoody Base Layer Top - Women's$49.73Save 28%compared to  $69.95Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- Kari TraaEloise Long-Sleeve Base Layer Top - Women's$51.73Save 26%compared to  $70.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:LightweightSize Type:RegularREI OUTLET
- IcebreakerMerino 200 ZoneKnit Long-Sleeve Half-Zip Thermal Base Layer Top - Women's$103.73Save 35%compared to  $160.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:MidweightSize Type:RegularREI OUTLET
- SpraywayEffra Crew Base Layer Top - Women's$36.73Save 26%compared to  $49.95Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- Terramar3.0 Thermawool Half-Zip Base Layer Top - Women's$56.73Save 24%compared to  $75.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Kari TraaAlma Half-Zip Base Layer Top - Women's$59.73Save 25%compared to  $80.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:UltralightweightSize Type:RegularREI OUTLET
- Kari TraaFryd Base Layer Top - Women's$65.00Underwear Weight:MidweightSize Type:Regular
- Arc'teryxRho Hoody Base Layer Top - Women'sTop Rated$120.00 - $140.00Underwear Weight:LightweightSize Type:Regular, Plus
- SENIQWool Sculpt Merino Mock-Neck Long-Sleeve Base Layer Shirt - Women's$128.00Underwear Weight:HeavyweightSize Type:Regular
- Icebreaker125 ZoneKnit Crewe Base Layer Shirt - Women's$84.73Save 26%compared to  $115.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:LightweightSize Type:RegularREI OUTLET
151–180 of 241 products
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