Amazon.com : Hair Ties 100 Pack 12 Colors — Seamless One 。As a natural fiber, cotton is soft, friendly to the skin, and comfortable to wear. Suitable for long-time wear. we provide 3 pcs black color headbands in the pack. Due to the characteristics of cotton fiber itself, cotton hair bands have better moisture absorption and breathability. It can absorb your sweat very well and prevent sweat from flowing into your eyes. Our headband is made of high-quality cotton, which has good elasticity and comfort.Size:Width:2.75 in/7 cm. Length: 8.3 in/ 21cm. large stretch range, suitable for different head sizes. Not easy to slip and not too tight. Compared with other polyester and chemical fiber materials, cotton materials are more environmentally friendly and sustainable. Disposal has minimal impact on the environment even when not in use.