Cosmos&reg; 1 Pair Black Color Performance Compression Arm Sleeve for Football, Baseball, Running, Volleyball, & Athletic Sports Elbow circumference: 11 - 12 inches Engineered to fit comfortably from the mid-bicep to the wrist 13.5 -inch long stretch cotton fabric Compression fabric reduces soreness, cramping and fatigue Sweat-wicking, breathable compression fabric keeps you dry and comfortable; Lightweight material allows for full athletic movement