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Base Layer Tops: Deals
(156 products)Products (156)
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- Terramar1.0 All-Season Lightweight Merino Wool T-Shirt - Women's$34.73Save 30%compared to  $50.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- SmartwoolClassic All Season Merino Long-Sleeve Base Layer Top - Men'sTop Rated$66.73Save 25%compared to  $90.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Terramar2.0 Cloud Nine Half-Zip Base Layer Top - Women'sNew arrival$34.73Save 30%compared to  $50.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- SmartwoolClassic Thermal Merino Base Layer Quarter-Zip - Women's$89.73Save 25%compared to  $120.00Underwear Weight:MidweightSize Type:Regular, PlusREI OUTLET
- Wild RyeEvie Raglan Base Layer Top - Women'sTop Rated$61.83Save 50%compared to  $125.00Underwear Weight:LightweightSize Type:Regular, Plus
- Arc'teryxKyanite Base Layer Crew Top - Women's$59.83Save 50%compared to  $120.00Underwear Weight:HeavyweightSize Type:Regular
- Free CountryMicrotech Heat Cocaber Base Layer Top - Women's$34.73Save 30%compared to  $50.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- CraftCORE Dry Active Comfort Base Layer Top - Women's$39.73Save 38%compared to  $64.95Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Kari TraaSmekker Long-Sleeve Base Layer Top - Women's$89.73Save 25%compared to  $120.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- IcebreakerMerino 200 Sonebula Long-Sleeve Crewe Base Layer Top - Men'sTop Rated$89.73Save 25%compared to  $120.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET
- SmartwoolClassic Thermal Merino Crew Base Layer Top - Men'sTop Rated$85.73Save 25%compared to  $115.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- IcebreakerMerino 200 Sonebula Long-Sleeve High-Neck Base Layer Top - Men's$93.73Save 25%compared to  $125.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Arc'teryxRho Hoody Base Layer Top - Women'sTop Rated$104.93Save 19%compared to  $130.00Underwear Weight:LightweightSize Type:Regular
- Kari TraaSval Long-Sleeve Base Layer Top - Women's$39.83Save 50%compared to  $80.00Underwear Weight:LightweightSize Type:Regular
- Arc'teryxRho Heavyweight Zip-Neck Base Layer Top - Men's$112.73Save 19%compared to  $140.00Underwear Weight:HeavyweightSize Type:Regular, BigREI OUTLET
- Terramar3.0 Thermawool Crew Base Layer Top - Women's$49.73 - $52.73Save 24% - 28%compared to  $70.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- Kari TraaRose Base Layer Hoodie - Women's$97.73Save 24%compared to  $130.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- Icebreaker125 ZoneKnit Merino Long-Sleeve Crewe Thermal Top - Men'sTop Rated$93.73Save 25%compared to  $125.00Underwear Weight:UltralightweightSize Type:Regular, BigREI OUTLET
- IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men'sTop Rated$78.73Save 25%compared to  $105.00Underwear Weight:LightweightSize Type:Big, RegularREI OUTLET
- 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
- PatagoniaCapilene Midweight Crew Base Layer Top - Kids'$26.93Save 30%compared to  $39.00Underwear Weight:MidweightSize Type:Regular
- SmartwoolIntraknit Active Base Layer Crew Shirt - Men's$81.73Save 25%compared to  $110.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET
- ArtilectBoulder 125 Crew Long-Sleeve Base Layer Top - Women's$75.73Save 36%compared to  $120.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- ArtilectFlatiron 185 Quarter-Zip Base Layer Top - Women's$99.73Save 37%compared to  $160.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
- SpraywayEffra Hoody Base Layer Top - Women's$49.73Save 28%compared to  $69.95Underwear Weight:HeavyweightSize Type:Regular, PlusREI OUTLET
- IcebreakerMerino 200 Oasis Long-Sleeve Half-Zip Thermal Base Layer Top - Women'sTop Rated$84.73Save 26%compared to  $115.00Underwear Weight:MidweightSize Type:Regular, PlusREI OUTLET
- Free CountryForce Grid Fleece Crew Base Layer Top - Men'sTop Rated$26.73Save 40%compared to  $45.00Underwear Weight:LightweightSize Type:BigREI OUTLET
- SmartwoolIntraknit Thermal Merino Pattern Crew Base Layer Top - Men's$75.73Save 41%compared to  $130.00Underwear Weight:LightweightSize Type:Big, RegularREI OUTLET
- Kari TraaLucie Half-Zip Base Layer Top - Women's$67.73Save 24%compared to  $90.00Underwear Weight:LightweightSize Type:RegularREI OUTLET
- Arc'teryxRho Base Layer Hoody - Women'sTop Rated$96.73Save 19%compared to  $120.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
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