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Base Layer Tops: Deals
(177 products)Products (177)
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- New arrival
Icebreaker125 ZoneKnit Crewe Base Layer Shirt - Men's
$86.73Save 24%compared to  $115.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLET - New arrival
Kari TraaAlma Half-Zip Base Layer Top - Women's
$59.73Save 25%compared to  $80.00Underwear Weight:UltralightweightSize Type:RegularREI OUTLET - New arrival
SaxxRoast Master Midweight Long-Sleeve Crew Base Layer Top - Men's
$52.73Save 29%compared to  $75.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET - New arrival
IcebreakerMerino 125 ZoneKnit Long-Sleeve Half-Zip Base Layer Top - Men's
$99.73Save 26%compared to  $135.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLET SpraywayEffra Crew Base Layer Top - Women's
$36.73Save 26%compared to  $49.95Underwear Weight:HeavyweightSize Type:Regular, PlusREI OUTLET- New arrival
Icebreaker125 ZoneKnit Crewe Base Layer Shirt - Women's
$86.73Save 24%compared to  $115.00Underwear Weight:LightweightSize Type:RegularREI OUTLET Helly HansenLIFA Merino Midweight Half-Zip Base Layer Top - Women's
$79.73 - $82.73Save 24% - 27%compared to  $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLET- New arrival
IcebreakerMerino 260 Tech Long Sleeve Crewe Base Layer Top - Men's
$119.73Save 27%compared to  $165.00Underwear Weight:HeavyweightSize Type:Regular, BigREI OUTLET SpraywayEffra Hoody Base Layer Top - Women's
$49.73Save 28%compared to  $69.95Underwear Weight:HeavyweightSize Type:Regular, PlusREI OUTLETSmartwoolClassic Thermal Merino Lettuce Edge Crew Base Layer Top - Women's
$82.73Save 28%compared to  $115.00Underwear Weight:MidweightSize Type:RegularREI OUTLET- New arrival
IcebreakerMerino 260 Vertex Long-Sleeve Crewe Thermal Base Layer Top - Women's
$99.73Save 28%compared to  $140.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET Helly HansenVerglas Half-Zip Top - Women's
$63.73Save 25%compared to  $85.00Underwear Weight:LightweightSize Type:RegularREI OUTLET- Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Women's
$78.73Save 25%compared to  $105.00Size Type:Regular, PlusREI OUTLET - New arrival
Kari TraaLilja Long-Sleeve Base Layer Top - Women's
$49.73Save 24%compared to  $66.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET - New arrival
CraftCore Dry Active Comfort Long-Sleeve Base Layer Jersey - Kids'
$42.73Save 34%compared to  $64.95Underwear Weight:MidweightSize Type:RegularREI OUTLET Helly HansenLIFA Merino Midweight 2-In-1 Graphic Half-Zip Base Layer Top - Women's
$86.73 - $89.73Save 25% - 27%compared to  $120.00Underwear Weight:MidweightSize Type:RegularREI OUTLET- New arrival
Kari TraaLekker Half-Zip Base Layer Top - Women's
$44.73Save 25%compared to  $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLET - Top Rated
IcebreakerMerino 260 Tech Long-Sleeve Half-Zip Thermal Base Layer Top - Men's
$99.73Save 26%compared to  $135.00Underwear Weight:HeavyweightSize Type:Regular, BigREI OUTLET - Top Rated
IcebreakerMerino 200 Oasis Long-Sleeve Half-Zip Thermal Base Layer Top - Women's
$86.73Save 24%compared to  $115.00Underwear Weight:MidweightSize Type:Regular, PlusREI OUTLET - New arrival
Kari TraaMalia Long-Sleeve Base Layer Top - Women's
$52.73Save 24%compared to  $70.00Underwear Weight:MidweightSize Type:Regular, PlusREI OUTLET Terramar2.0 Ultra Merino Turtleneck Base Layer Top - Women's
$52.73Save 29%compared to  $75.00Underwear Weight:MidweightSize Type:RegularREI OUTLETIcebreakerMerino 260 Vertex Long-Sleeve Crewe Natural Shades Base Layer Top - Women's
$104.73Save 25%compared to  $140.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETIcebreaker200 Oasis Sonebula Long-Sleeve Crewe Base Layer Top - Women's
$89.73Save 25%compared to  $120.00Underwear Weight:LightweightSize Type:RegularREI OUTLETHelly HansenLIFA Merino Midweight Crew Base Layer Top - Women's
$74.73Save 25%compared to  $100.00Underwear Weight:MidweightSize Type:RegularREI OUTLETHelly HansenOdin Power Stretch Half-Zip Base Layer Top - Women's
$88.73Save 40%compared to  $150.00Underwear Weight:MidweightSize Type:RegularREI OUTLETTerramar3.0 Thermawool Half-Zip Base Layer Top - Women's
$56.73Save 24%compared to  $75.00Underwear Weight:MidweightSize Type:RegularREI OUTLETWild RyeEvie Raglan Base Layer Top - Women's
$69.73Save 41%compared to  $119.00Underwear Weight:LightweightSize Type:RegularREI OUTLETHelly HansenGraphic Lifa Merino Base Layer Set - Kids'
$74.73Save 32%compared to  $110.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET- New arrival
Icebreaker200 ZoneKnit Long-Sleeve Crewe Base Layer Thermal Top - Men's
$109.73Save 26%compared to  $150.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET Mons RoyaleCascade Merino Flex Mock-Neck Base Layer Top - Women's
$89.73Save 35%compared to  $140.00Underwear Weight:MidweightSize Type:RegularREI OUTLET
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