Features of the Mammut Men's Zun ML Crew Neck Shirt Organically produced cotton: GOTS-certified Inserts made of elasticated material with ribbed look Modern crew neck design Partially bonded hems and collar edge ensure a streamlined and Technical look and avoid friction on the skin Reflective in. Xin. logo on the back Fabric Details Weight: 306 g Main Material: 94% Cotton (Bio Cotton) / 6% Spandex