The Icebreaker M Merino ZoneKnit 200 LS Half Zip is more than just a tops. Made from pure merino wool, the shirt helps to regulate the body climate during movement-intensive activities. Featuring ZoneKnit technology, it adapts to your body temperature, especially when you're working at a high level. Raglan sleeves and underarm gussets promote freedom of movement. The half-zip and flat seams also ensure active temperature regulation and friction-free comfort. Comfort and functionality merge in this innovative product.