Intraknit REI Co-op
![](https://www.rei.com/media/0ebc94c3-f5ae-486f-b0ff-79c141c680d3.jpg)
A lightweight top made for your most extreme cold-weather activities, the women's Smartwool Intraknit Thermal Merino Crew base layer top is designed
Intraknit Thermal Merino Crew Base Layer Top - Women's
![](https://i.ytimg.com/vi/cG9krkC4Ss4/maxresdefault.jpg)
Smartwool Intraknit Thermal Merino Crew Base Layer Top - Men's
![](https://www.rei.com/media/540e5f49-32ee-4d35-9274-9f2de493810b.jpg?size=576x768)
Smartwool Intraknit Thermal Max Quarter-Zip Base Layer Top - Men's
![](https://www.rei.com/media/26cd4857-8f12-41ea-97a9-05188a178de4.jpg?size=576x768)
Smartwool Intraknit 200 Pattern Quarter-Zip Base Layer Top - Women's
Smartwool Intraknit Merino Tech Half-Zip Hoodie - Men's
Mapped for comfort and dryness, the women's Smartwool Intraknit 200 Pattern quarter-zip top features new zoned mesh ventilation with breathable warmth
![](https://www.rei.com/media/b381d230-0d3d-4951-b4cc-9ccdba71ca54.jpg?size=576x768)
Intraknit 200 Pattern Quarter-Zip Base Layer Top - Women's
![](https://www.rei.com/media/87646098-877b-41d0-bacb-32318ae020ae.jpg?size=576x768)
Smartwool Intraknit Thermal Merino Quarter-Zip Base Layer Top - Women's
![](https://i.ytimg.com/vi/AOPJ_fpzuSo/maxresdefault.jpg)
Smartwool Intraknit Thermal Merino Quarter-Zip Base Layer Top - Men's
Smartwool Intraknit Thermal Merino Quarter-Zip Base Layer Top - Women's
Smartwool Intraknit Merino Fleece Full-Zip Hoodie - Women's
![](https://www.rei.com/media/97b96042-bf1e-4241-af4f-51f97e99027a.jpg?size=576x768)
Smartwool Intraknit Active Full-Zip Jacket - Women's
![](https://www.rei.com/media/7325c942-f1eb-47c5-8b77-c44216e61e44.jpg)
Intraknit REI Co-op