This tee is very tuff. Made from real hemp fiber yarn, mixed with Organic Cotton and also enzyme washed for softness. The quality sewing includes double needle stitching at sleeves & hem, cover stitched neck, taped reinforcement from shoulder to shoulder. Odor control, anti-bacterial, lasts forever, doesn't wrinkle, cool in summer (because it breathes), warm in winter (because of its insulative properties and weight), it's sustainable. (wash & dry on cool) Defintion of STRENGTH. Great for skating.