The 2XU Compression Arm Sleeve uses seamless, circular knit construction to create the ultimate graduated arm sleeve for the forearm and bicep. This arm sleeve encases the entire length of the arm, applying a graduated pressure to increase circulation and support the muscles and tendons in the forearm, elbow and bicep.ACTIVE USE, Running/Hiking, Gym/Fitness, General Sports, Climbing, Training and CompeitionsRECOVERY USE, Post Workout or Competition, Rehab from Injury or Surgery.