Smartwool

Breathable, soft, lightweight fabric offers next-to-skin comfort.

Spring skiing or summer camping? The Classic All-Season Merino Base Layer Long Sleeve is game for either thanks to the body temp regulating and no-stink properties of Merino. Featuring Core Spun technology, Smartwool has wrapped Merino around a nylon core for added durability while still keeping the comfort of ultra-soft Merino next to skin. With smooth flatlock seams to help minimize chafing and offset shoulder and side seams to lie smoothly beneath pack straps.

Formerly known as the Merino 150 Base Layer Long Sleeve. Packaging may have either name but the product is identical.