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Base Layer Tops
(259 products)Products (259)
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- 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
- SENIQWool Sculpt Merino Mock-Neck Long-Sleeve Base Layer Shirt - Women's$128.00Underwear Weight:HeavyweightSize Type:Regular
- Arc'teryxRho Hoody Base Layer Top - Women'sTop Rated$120.00 - $140.00Underwear Weight:LightweightSize Type:Regular, Plus
- 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
- Helly HansenLIFA Merino Midweight 2-In-1 Graphic Half-Zip Base Layer Top - Women's$86.73Save 27%compared to  $120.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:MidweightSize Type:RegularREI OUTLET
- IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Women'sTop Rated$78.73Save 25%compared to  $105.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Size Type:PlusREI OUTLET
- Icebreaker125 Cool-Lite Merino Blend Sphere III Scoop T-Shirt - Women's$75.00Underwear Weight:LightweightSize Type:Regular
- Icebreaker200 Oasis Crewe Long-Sleeve Base Layer Top - Kids'Top Rated$60.00Underwear Weight:MidweightSize Type:Regular
- SmartwoolClassic Thermal Merino Half-Zip Base Layer Hoodie - Women's$145.00Size Type:Regular
- Kari TraaEmbla Wool Long-Sleeve Base Layer Top - Women's$90.00Underwear Weight:UltralightweightSize Type:Regular
- Kari TraaMalia 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:MidweightSize Type:PlusREI OUTLET
- Kari TraaFaith Half-Zip Base Layer Top - Women's$86.73Save 27%compared to  $120.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- SmartwoolClassic Thermal Merino Base Layer Quarter-Zip Top - Kids'$70.00Underwear Weight:MidweightSize Type:Regular
- Helly HansenLIFA Merino Midweight 2-in-1 Graphic Half-Zip Base Layer Top - Women's$125.00Underwear Weight:MidweightSize Type:Regular
- Icebreaker260 Tech Vertex Long-Sleeve Half-Zip Thermal Base Layer Top - Women's$150.00Underwear Weight:HeavyweightSize Type:Regular
- Kari TraaSmekker Long-Sleeve Base Layer Top - Women's$89.73Save 25%compared to  $120.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Terramar2.0 Thermolator Crew Base Layer Top - Kids'New arrival$24.73Save 29%compared to  $35.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Kari TraaFierce Long-Sleeve Base Layer Top - Women's$46.73Save 29%compared to  $66.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:LightweightSize Type:RegularREI OUTLET
- BurtonFleece Base Layer Set - Kids'$69.95Underwear Weight:MidweightSize Type:Regular
- CraftCore Dry Active Comfort Long-Sleeve Base Layer Jersey - Kids'$38.73Save 40%compared to  $64.95Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:MidweightSize Type:RegularREI OUTLET
- ArtilectBoulder 125 Crew Long-Sleeve Base Layer Top - Women's$65.73Save 45%compared to  $120.00Save up to 30% extra on your REI Outlet purchase, thru 12/16.Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Kari TraaSaga Half-Zip Base Layer Top - Women's$135.00Underwear Weight:HeavyweightSize Type:Regular
- Kari TraaSilja Half-Zip 2.0 Base Layer Top - Women's$120.00Underwear Weight:HeavyweightSize Type:Regular
- Arms of Andes160 Ultralight Alpaca Wool Crew Neck Base Layer T-Shirt - Women's$75.00Underwear Weight:UltralightweightSize Type:Regular
181–210 of 259 products
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