Icebreaker Zoneknit Crewe

Engineered for demanding mountain pursuits, the Icebreaker Zoneknit Crewe is a long-sleeve base layer crafted from soft, midweight merino wool. It delivers natural temperature regulation, odor resistance, and reliable comfort across changing conditions, making it an ideal first layer for cold-weather training and backcountry adventures.

Built with innovative technology, the shirt uses strategically placed eyelet mesh zones to enhance breathability exactly where you need it most, helping you stay dry during sustained efforts. A gusset and raglan sleeves ensure unrestricted freedom of movement, while flat seams minimize chafing—even under a pack or harness. Thumb loops keep sleeves securely in place, and the extended back hem provides additional coverage during dynamic motion.