Kinesiology therapeutic tape. Preferred by Gold Medalist Kerri Walsh Jennings. Cotton performance fabric. Train longer. Finish stronger. For Common Injuries (Not clinically proven for all injuries): Carpal tunnel; hamstring strain; wrist pain; runner's knee; neck strain; calf strain; shoulder pain; Achilles tendonitis; tennis elbow; plantar fasciitis; golfer's elbow; shin splints; rib pain; ankle sprain; gluteus pain; quad strain. KT Tape Original vs. KT Tape Pro: Original: all-natural cotton; comfortable to wear; 1-3 days of wear; good level of support. Pro: Engineered synthetic; comfortable to wear; 4-7 days of wear; best level of support; reflective safety print; protective case; water resistant. Nonsterile.