The Kari Traa Åkle Half Zip is a 100% merino wool baselayer designed for comfort, performance, and warmth. Body mapping ensures stretch where you need it, while the Jacquard knit holds shape. The precise fit allows freedom of movement, and merino fibers offer natural odor resistance, next to skin comfort, and unrivaled performance in all conditions. Thin side panels and a half-zip increase breathability