88% merino wool, 11% nylon, 3% spandex Size small could also fit medium, stretchy, see measurements Soft and comfortable, great year-round t-shirt Medium weight, moisture wicking, odor resistant, packable, travel Dark gray, lighter gray mountain logo Excellent light use condition Line dried, no smoking or strong detergent used Check out my closet for more quality outdoor, travel and sportswear items Travel Camping Campus Merino Odor Resistant Stylish Millennial Trendy