Smartwool Moisture Wicking Base Layers
(46 products)- SmartwoolClassic Thermal Merino Crew Base Layer Top - Women'sTop Rated$125.00Underwear Weight:MidweightSize Type:Regular, Plus
- SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's$125.00Underwear Weight:MidweightSize Type:Regular
- SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men'sTop Rated$66.93 - $100.00Underwear Weight:LightweightSize Type:Regular, Big
- SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Women'sTop Rated$130.00Underwear Weight:MidweightSize Type:Regular, Plus
- SmartwoolClassic Thermal Merino Base Layer Bottoms - Men'sTop Rated$125.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolClassic Thermal Merino Quarter-Zip Base Layer Top - Men'sTop Rated$130.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolClassic Thermal Merino Crew Base Layer Top - Men'sTop Rated$125.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Women's$100.00Underwear Weight:LightweightSize Type:Regular, Plus
- SmartwoolClassic All-Season Merino T-Shirt - Women's$95.00Underwear Weight:LightweightSize Type:Regular, Plus
- SmartwoolClassic All-Season Merino T-Shirt - Men's$95.00Underwear Weight:LightweightSize Type:Regular, Big
- SmartwoolClassic All-Season Merino Quarter-Zip Base Layer Top - Men'sTop Rated$105.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolClassic All-Season Merino Base Layer Bottoms - Men's$100.00Underwear Weight:LightweightSize Type:Regular, Big
- SmartwoolClassic All-Season Merino Base Layer Bottoms - Women's$100.00Underwear Weight:LightweightSize Type:Regular, Plus
- SmartwoolClassic Thermal Merino 3/4 Base Layer Bottoms - Men'sTop Rated$115.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Women's$150.00Underwear Weight:MidweightSize Type:Regular
- SmartwoolClassic Thermal Merino Colorblock Crew Base Layer Top - Women's$130.00Underwear Weight:MidweightSize Type:Regular
- SmartwoolIntraknit Thermal Merino Base Layer Quarter-Zip Top - Men's$140.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolClassic All-Season Merino 3/4 Base Layer Bottoms - Men's$85.00Underwear Weight:LightweightSize Type:Regular, Big
- SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's$150.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolIntraknit Thermal Merino Colorblock Quarter-Zip Base Layer Top - Women's$140.00Underwear Weight:MidweightSize Type:Regular
Get $130 in value
$30 in card rewards are yours when approved for the REI Co-op Mastercard by Mar 9. Plus, you can earn a $100 REI gift card after your first purchase. Terms apply.
Apply now- SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Men's$150.00Underwear Weight:LightweightSize Type:Regular, Big
- SmartwoolClassic All-Season Merino Quarter-Zip Base Layer Top - Women's$105.00Size Type:Regular
- SmartwoolIntraknit AS Merino Base Layer Bottoms - Women's$125.00Underwear Weight:MidweightSize Type:Regular
- SmartwoolIntraknit AS Merino Base Layer Bottoms - Men's$125.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolIntraknit Thermal Merino Base Layer Bottoms - Women's$150.00Underwear Weight:LightweightSize Type:Regular
- SmartwoolIntraknit AS Merino Base Layer Crew Top - Women's$125.00Underwear Weight:MidweightSize Type:Regular
- SmartwoolIntraknit AS Merino Base Layer Crew Top - Men's$125.00Underwear Weight:MidweightSize Type:Regular, Big
- SmartwoolIntraknit Thermal Max Merino Quarter-Zip Base Layer Top - Women'sNew arrival$115.73Save 25%compared to  $155.00Underwear Weight:HeavyweightSize Type:RegularREI OUTLET
- SmartwoolIntraknit Thermal Merino Crew Base Layer Top - Men's$92.73Save 28%compared to  $130.00Underwear Weight:MidweightSize Type:Regular, BigREI OUTLET
- SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's Plus Sizes$125.00Underwear Weight:MidweightSize Type:Plus








































































































