Both the sling pouch and back strap are made of stretchable material and adjust for custom comfort and fit. The flexible nature of the sling reduces common neck complaints and dramatically increases patient compliance. It is designed for use in hospital emergency rooms, cast rooms, clinics, and for disaster relief – anywhere arm slings are used in high volume for short-term injuries. It fits both left and right arms and is latex free. The Joslin ER Sling® may be cleaned with a damp cloth (do not machine wash). No other sling in its price range competes for fit, comfort and overall customer satisfaction!