What Our Gearhead(R) Experts Are Saying:"I wore the Bergtagen Midlayer 1/2-Zip Pullover under a shell on a cold alpine day, and the half-zip made temperature regulation easy every time the pace picked up. The wool blend also kept it from holding onto odor after a few days of back-to-back use."A good midlayer earns its place by working just as well solo as it does stacked under a shell, and the Bergtagen Midlayer 1/2-Zip Pullover from Fjallraven fits either role easily. Wear it alone on a cool morning hike, then zip a shell over it the moment the wind picks up higher on the ridge. A blend of recycled polyester and traceable wool combines warmth, moisture wicking, and real durability, while an inside grid structure traps air for added insulation without extra bulk. A half-zip collar makes quick venting simple, and a zippered front pocket keeps small essentials close whether this layer is worn as a base or a mid.