The Rx Elbow Sleeve is a versatile product that provides strong support for heavy workouts or pain relief if you are injured. The construction of the product is build on a unique patent, securing its anatomical fit. The shape allows the product to follow the body’s motions . This creates a combined mental and physical frame to keep your body moving towards strength instead of injury. The elbow support will guide your body in moving correctly without limiting muscle development around your elbow. The Rehband Rx Elbow Sleeve is classified as a medical device. It combines the key benefits stability, compression and warmth. Stability offers a mental and physical feeling of safety. Compression helps preventing injuries and increases your muscle memory of how to move correctly. Warmth protects your joints and soft tissues from injury. Together these elements improve your performance capability. SOLD AS A SINGLE Keep the elbow slightly bent (about 30 degrees) and measure the circumference (cm). Small 24cm - 26cm Medium 26cm - 28cm Large 28cm - 30cm Extra Large 30cm - 32cm