85% Cotton, 12% Spandex, 3% Nylon The sweat wristbands are made of good quality cotton, 85% cotton, 12% spandex, 3% nylon, they measure approx. 3.15 x 3.15 inches/ 8 x 8 cm (lw) Their double layers are designed with organic cotton material, which is non-slip and light-weight The wrist sweatband with good absorbent can wipe off sweat from your face when you exercise or do sports, give you a comfortable sporting feeling Washing: You can wash them by hands or machines, it can hold up well and keeps its shape after machine washing The wristbands can be stretched to fit your hands size, great for all sports such as playing football, basketball, running, etc. (Unisex) Dear customer, Thank you for choosing our products. If there is any problem with our products, please contact us through the order information. We will be happy to serve you and solve it for you as soon as possible within 12 hours, thank you