Skip to search results
loaded 89 results
Lightweight Base Layer Tops
(89 products)Products (89)
Sort: Best Match
- REI Co-opLightweight Half-Zip Base Layer Top - Women'sTop Rated$44.95Underwear Weight:LightweightSize Type:Regular, Plus
- REI Co-opMerino 185 Base Layer Top - Women's$69.95Underwear Weight:LightweightSize Type:Regular
- Kari TraaKaia Base Layer Set - Women's$130.00Underwear Weight:LightweightSize Type:Regular
- Arc'teryxLana Merino Wool Base Layer Tank Top - Women's$64.73Save 19%compared to  $80.00Underwear Weight:LightweightSize Type:Regular, PlusREI OUTLET
- IcebreakerMerino 125 ZoneKnit Long-Sleeve Half-Zip Base Layer Top - Men'sTop Rated$99.73Save 26%compared to  $135.00Underwear Weight:LightweightSize Type:Big, RegularREI OUTLET
- REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's Plus Sizes$79.95Underwear Weight:LightweightSize Type:Plus
- HalfdaysJohnson Base Layer Top - Women's$95.00Underwear Weight:UltralightweightSize Type:Regular
- KUHLReactiv Lite Grid Long-Sleeve Crew Base Layer Top - Men's$109.00Underwear Weight:LightweightSize Type:Regular, Big
- Icebreaker200 Oasis Long-Sleeve Half-Zip Base Layer Top - Women'sTop Rated$115.00Underwear Weight:LightweightSize Type:Regular, Plus
- Kari TraaSmekker Long-Sleeve Base Layer Top - Women's$89.73Save 25%compared to  $120.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Black DiamondSolution 150 Merino Base Layer Crew Top - Women'sTop Rated$99.73Save 26%compared to  $135.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- KUHLReactiv Lite Grid Quarter-Zip Base Layer Top - Men's$119.00Underwear Weight:LightweightSize Type:Regular, Big
- SmartwoolIntraknit Thermal Merino Colorblock Crew Base Layer Top - Men's$130.00Underwear Weight:LightweightSize Type:Regular, Big
- Kari TraaSmekker Half-Zip Base Layer Top - Women's$89.73Save 30%compared to  $130.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- REI Co-opLightweight Crew Base Layer Top - Women'sTop Rated$29.95Underwear Weight:LightweightSize Type:Regular, Plus
- IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men'sTop Rated$78.73Save 25%compared to  $105.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Helly HansenHH Durawool Crew Long-Sleeve Shirt - Women'sNew arrival$64.73Save 28%compared to  $90.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Icebreaker125 ZoneKnit Merino Long-Sleeve Crewe Thermal Top - Men'sTop Rated$93.73Save 25%compared to  $125.00Underwear Weight:UltralightweightSize Type:RegularREI OUTLET
- Arms of Andes300 Alpaca Wool Long-Sleeve Crew Base Layer Top - Men's$130.00 - $140.00Underwear Weight:LightweightSize Type:Regular, Big
- IcebreakerSiren Sweetheart Long Underwear Top - Women's$85.00Underwear Weight:LightweightSize Type:Regular
- Outdoor ResearchAlpine Onset Merino 150 Crew Base Layer Top - Men's$99.00Underwear Weight:LightweightSize Type:Regular, Big
- Helly HansenHH Durawool Base Layer T-Shirt - Women'sNew arrival$56.73Save 29%compared to  $80.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- KUHLReactiv Lite Grid Long-Sleeve Crew Base Layer Top - Women's$109.00Underwear Weight:LightweightSize Type:Regular
- Arms of Andes160 Ultralight Alpaca Wool Crewneck Base Layer T-Shirt - Men's$80.00Underwear Weight:UltralightweightSize Type:Regular, Big
- Kari TraaEmbla Wool Long-Sleeve Base Layer Top - Women's$90.00Underwear Weight:UltralightweightSize Type:Regular
- Icebreaker150 Anatomica Crewe Base Layer Top - Men'sTop Rated$75.00Underwear Weight:LightweightSize Type:Regular, Big
- Outdoor ResearchAlpine Onset Merino 150 Quarter-Zip Base Layer Top - Men's$109.00Underwear Weight:LightweightSize Type:Regular
- Icebreaker125 ZoneKnit Long-Sleeve Crewe Base Layer Thermal Top - Women's$93.73Save 25%compared to  $125.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- FP MovementMyoko Base Layer Top - Women's$98.00Underwear Weight:LightweightSize Type:Regular
- The North FaceSummit Series Pro 120 Crew Base Layer Top - Men'sTop Rated$90.00Underwear Weight:UltralightweightSize Type:Big
31–60 of 89 products
Sort: Best Match