Skip to search results
loaded 18 results
Smartwool Underwear: Deals
(18 products)Products (18)
Sort: Best Match
- SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men'sTop Rated$66.93 - $100.00Underwear Weight:LightweightSize Type:Regular, Big
- SmartwoolIntraknit Racerback Bra$34.73Save 46%compared to  $65.00Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.Bra Support:Low ImpactSupport Style:CompressionFabric:62% nylon/28% elastane/10% polyester (exclusive of decoration)REI OUTLET
- SmartwoolIntraknit Crop Bra$39.73Save 43%compared to  $70.00Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.Bra Support:Low ImpactSupport Style:CompressionFabric:62% nylon/28% elastane/10% polyester (exclusive of decoration)REI OUTLET
- SmartwoolActive Crop Bra$49.73 - $54.73Save 27% - 28%compared to  $70.00 - $75.00Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.Bra Support:Low ImpactSupport Style:CompressionFabric:Main body: 87% recycled nylon/13% elastane; lining: 53% merino wool/47% TENCEL lyocellREI OUTLET
- SmartwoolMerino Print Boxer Briefs - Men's$34.73Save 27%compared to  $48.00Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.Size Type:RegularREI OUTLET
- SmartwoolActive Boxer Briefs - Men's$24.73Save 29%compared to  $35.00Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.Size Type:Regular, BigREI OUTLET
- SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Women's$96.73Save 25%compared to  $130.00Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.Underwear Weight:MidweightSize Type:RegularREI OUTLET
- SmartwoolIntraknit Strappy Bra$46.73Save 28%compared to  $65.00Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.Bra Support:Low ImpactSupport Style:EncapsulationFabric:69% nylon/17% elastane/14% polyesterREI OUTLET
- SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's$92.73Save 28%compared to  $130.00Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET
- SmartwoolActive Crop BraTop Rated$51.73Save 26%compared to  $70.00Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.Bra Support:Low ImpactSupport Style:CompressionFabric:87% nylon/13% elastane (exclusive of decoration)REI OUTLET
- SmartwoolIntraknit Active Base Layer Bottoms - Men's$81.73Save 25%compared to  $110.00Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.Underwear Weight:MidweightSize Type:BigREI OUTLET
- SmartwoolIntraknit Thermal Max Merino Base Layer Pattern Hoodie - Women's$114.73Save 30%compared to  $165.00Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.Size Type:RegularREI OUTLET
- SmartwoolClassic Thermal Merino Crew Base Layer Top - Women'sTop Rated$81.73Save 28%compared to  $115.00Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.Underwear Weight:MidweightSize Type:RegularREI OUTLET
- SmartwoolClassic Thermal Merino Crew Base Layer Top - Kids'$47.93 - $65.00Underwear Weight:MidweightSize Type:Regular
- SmartwoolIntraknit Thermal Merino Base Layer Colorblock Crew - Men's$96.73Save 25%compared to  $130.00Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET
- SmartwoolIntraknit Thermal Merino Pattern Crew Base Layer Top - Women's$96.73Save 25%compared to  $130.00Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.Underwear Weight:MidweightSize Type:RegularREI OUTLET
- SmartwoolClassic Thermal Merino Base Layer Quarter-Zip Top - Kids'$51.93 - $70.00Underwear Weight:MidweightSize Type:Regular
- SmartwoolClassic Thermal Merino Crew Base Layer Top - Kids'$44.73Save 31%compared to  $65.00Use code OUTFEB26 for $20 off when you spend $100+ at REI Outlet.Underwear Weight:MidweightSize Type:RegularREI OUTLET
Earn 15% in total rewards
Get 5% on all REI Co-op purchases plus the 10% Co-op Member Reward you earn on eligible full-price purchases.
Apply now
Terms apply
Sort: Best Match









































