KT Tape Original Kinesiology tape and Gentle Kinesiology tape are made of 100% cotton fibers with specialized elastic cores. KT Tape PRO, PRO Extreme and PRO X are made using a highly engineered, ultra-durable synthetic fabric with 30% stronger elastic cores. Both the cotton and synthetic materials create unidirectional elasticity which allows the tape to stretch in length but not in width. As a result, the elastic fibers provide stable support without restricting range of motion like a traditional rigid athletic tape. KT Tape lifts the skin, decompressing the layers of fascia, allowing for greater movement of lymphatic fluid which transports white blood cells throughout the body and removes waste products, cellular debris, and bacteria.