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Base Layer Tops: Deals
(191 products)Products (191)
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CraftCore Dry Active Comfort Long-Sleeve Base Layer Jersey - Kids'
$42.73Save 34%compared to $64.95Underwear Weight:MidweightSize Type:RegularREI OUTLETUltra Blue
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 OUTLETGarden Pink Digi Snow
SmartwoolClassic Thermal Merino Crew Base Layer Top - Kids'
$48.73Save 25%compared to $65.00Underwear Weight:MidweightSize Type:RegularREI OUTLETRoyal
New arrivalKari TraaLekker Half-Zip Base Layer Top - Women's
$44.73Save 25%compared to $60.00Underwear Weight:LightweightSize Type:RegularREI OUTLETBaja
Top RatedIcebreakerMerino 260 Tech Long-Sleeve Half-Zip Thermal Base Layer Top - Men's
$99.73Save 26%compared to $135.00Underwear Weight:HeavyweightSize Type:Regular, BigREI OUTLETMurk
New arrivalKari TraaMalia Long-Sleeve Base Layer Top - Women's
$52.73Save 24%compared to $70.00Underwear Weight:MidweightSize Type:Regular, PlusREI OUTLETBaja
Top RatedIcebreakerMerino 200 Oasis Long-Sleeve Half-Zip Thermal Base Layer Top - Women's
$86.73Save 24%compared to $115.00Underwear Weight:MidweightSize Type:Regular, PlusREI OUTLETBaby Trooper
Helly HansenLIFA Merino Midweight Crew Base Layer Top - Women's
$74.73Save 25%compared to $100.00Underwear Weight:MidweightSize Type:RegularREI OUTLETIcebreaker200 Oasis Sonebula Long-Sleeve Crewe Base Layer Top - Women's
$89.73Save 25%compared to $120.00Underwear Weight:LightweightSize Type:RegularREI OUTLETTerramar2.0 Ultra Merino Turtleneck Base Layer Top - Women's
$52.73Save 29%compared to $75.00Underwear Weight:MidweightSize Type:RegularREI OUTLETBlack/Loden
IcebreakerMerino 260 Vertex Long-Sleeve Crewe Natural Shades Base Layer Top - Women's
$104.73Save 25%compared to $140.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETTerramar3.0 Thermawool Half-Zip Base Layer Top - Women's
$56.73Save 24%compared to $75.00Underwear Weight:MidweightSize Type:RegularREI OUTLETTerramar1.0 All-Season Lightweight Merino Wool T-Shirt - Women's
$34.73Save 30%compared to $50.00Underwear Weight:LightweightSize Type:RegularREI OUTLETNavy
Helly HansenGraphic Lifa Merino Base Layer Set - Kids'
$74.73Save 32%compared to $110.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETJet Heather/Black/Metro/Cb
Top RatedIcebreaker200 ZoneKnit Long-Sleeve Crewe Base Layer Thermal Top - Men's
$109.73Save 26%compared to $150.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLETA/Cid/Ash
ArtilectBoulder 125 Crew Long-Sleeve Base Layer Top - Women's
$82.73Save 31%compared to $120.00Underwear Weight:LightweightSize Type:RegularREI OUTLETSpraywayEffra Jacket Base Layer Top - Women's
$46.73Save 28%compared to $64.95Underwear Weight:HeavyweightSize Type:Regular, PlusREI OUTLETSea Spray/Ash
ArtilectFlatiron 185 Quarter-Zip Base Layer Top - Women's
$109.73Save 31%compared to $160.00Underwear Weight:MidweightSize Type:RegularREI OUTLETSag
Kari TraaRose Base Layer Hoodie - Women's
$97.73Save 24%compared to $130.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLETBlack
CraftCORE Dry Active Comfort Base Layer Top - Men's
$39.73Save 38%compared to $64.95Underwear Weight:MidweightSize Type:Regular, BigREI OUTLETTwilight Blue
SmartwoolIntraknit Active Base Layer Crew Shirt - Men's
$81.73Save 25%compared to $110.00Underwear Weight:MidweightSize Type:Big, RegularREI OUTLETMoss
Top RatedIcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's
$78.73Save 25%compared to $105.00Underwear Weight:LightweightSize Type:Big, RegularREI OUTLETHickory Mountain Camo
Top RatedHelly HansenLifa Merino Midweight Graphic Base Layer Top - Women's
$79.73 - $82.73Save 24% - 27%compared to $110.00Underwear Weight:MidweightSize Type:RegularREI OUTLETIcebreakerMerino 200 Oasis Long-Sleeve Crewe Macro Forms Base Layer Top - Women's
$85.73Save 25%compared to $115.00Underwear Weight:MidweightSize Type:RegularREI OUTLETTie Dye
ArtilectFlatiron 185 Crew Base Layer Top - Men's
$96.73 - $109.73Save 30% - 31%compared to $140.00 - $160.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET- Top Rated
Sweaty BettyHigh-Neck Jacquard Base Layer Top - Women's
$82.73Save 29%compared to $118.00Underwear Weight:MidweightSize Type:RegularREI OUTLET - Top Rated
IcebreakerMerino 200 Sonebula Long-Sleeve High-Neck Base Layer Top - Women's
$93.73Save 25%compared to $125.00Underwear Weight:MidweightSize Type:RegularREI OUTLET Helly HansenLIFA Merino Midweight 2-In-1 Base Layer Hoodie - Women's
$89.73Save 25%compared to $120.00Underwear Weight:MidweightSize Type:RegularREI OUTLETIcebreakerMerino 260 Vertex Long-Sleeve Half-Zip Herenga Base Layer Top - Women's
$99.73Save 33%compared to $150.00Size Type:RegularREI OUTLETHoney Gold Mountain
SmartwoolIntraknit Thermal Merino Pattern Crew Base Layer Top - Men's
$90.73Save 30%compared to $130.00Underwear Weight:LightweightSize Type:Regular, BigREI OUTLET
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