Tynor Pouch Arm Sling TropicalUnit : Each Scientifically designed to give optimal support and immobilization to the fractured or post surgical arm. It maintains the arm at a 90 degree angle at the elbow joint which promotes both healing and comfort. The ingenious sling design promotes healing and comfort by securely holding the arm in a stable position. Product Details Durable fabric holds heavy casts easily Functional design covers and supports the cast optimally Thumb cradle