The sweat wristbands are made of 80% cotton,5% spandex,15% latex yarn, they measure approx. 4.5 x 4.5 inches/11.5x 11.5 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.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)