Kinesiology therapeutic tape. Pre cut 4 inch wide. 100% synthetic. Elastic sports tape for pain relief & support (not clinically proven for all injuries). Train longer. Finish stronger. For lower back & other large muscle groups (not clinically proven for all injuries): Lower back; Shoulder; Quad; Calf. KT Tape Pro Wide 4 inch. KT Tape Pro 2 inch. Pro Wide: longer-lasting performance; Best level of support; 4 to 7 days of wear; Better breathability; Comfortable; Excellent water-resistance. Non sterile.