The 200 ZoneKnit™ Long Sleeve Crew is a midweight baselayer designed for intense activity and made with 100% merino wool fabric that's naturally odor resistant. This technical top also features icebreaker’s ZoneKnit™ technology, which features strategic panels of engineered merino mesh for ample breathability during high-output pursuits. The gusseted, raglan sleeves are designed to increase range of motion, while flatlock seams help reduce friction. Inspired by nature, icebreaker harnesses the performance qualities of natural fibres to offer an alternative to clothing based on petrochemical synthetics. Merino is an annually renewable fibre that naturally resists odours, keeps you cool when it’s hot and warm when it’s not, and lets your skin breathe for comfort all day, every day.