Burton Women's Midweight Merino Crew Tops Body:100% Merino Wool Imported Medium-regular 100% Merino Wool Naturally Fast-Drying, Highly Breathable, Odor-Repellent Performance Chafe-Free Soft lock Seams for Comfort Thumbhole Cuffs Ultra fast-drying and highly breathable drirelease wool blend: 84 percent polyester,11 percent Merino wool, 5 percent spandex Superior wicking action and next-to-skin comfort Chafe-free soft lock seams for comfort Extra long body: strap in without your shirt un-tucking