10 inches precut. Endorsed by gold medalist Kerri Waish. Synthetic. Elastic sports tape. For pain relief and support. Play harder. For Common Injuries (not clinically proven for all applications): Carpal tunnel; hamstring strain; wrist pain; runner's knee; neck strain; calf strain; shoulder pain; achilles tendonitis; tennis elbow; shin splints; rib pain; ankle sprain; gluteus pain; quad strain. Join the Community: KT: kttape.com/forum. Facebok: Facebook.com/kttape. Twitter: Twitter.com/kttape. SmartLabel: Scan for more food information. Watch the Videos: kttape.com/instructions. Cotton or synthetic? Synthetic: Comfortable to wear; reflective safety print; protective case; water resistant. Days of Wear: 4-7. Level of Support: Best. CE listed. www.kttape.com. Made in China.