Marvel Hulk. Arm Sling With Lightweight Envelope And Strap Release Clip Designed For Easy Application And Comfortable Fit. Recommended For: Immobilization And Support Of The Arm Shoulder And Elbow Joints. Strap Release Clip Aids In On/off Application. Cotton/polyester Envelope Helps With A Comfortable Fit. Adjustable Strap Length Aids In A Proper Fit. Universal Design Fits Right Or Left Arm. Size Based On Arm Length: Up To 11 .