The adult full arm LimbO provides reliable waterproof protection to the whole of the arm, fitting snugly around the upper bicep. The M70 is our standard full arm model for average size arms. Please check the LimbO measuring guide for exact sizing advice. Light and easy to put on, the soft, flexible neoprene seal will stretch over your cast (or dressing) and around your elbow to get in to position on the upper arm. The strong triple layer sleeve will completely cover your full arm, keeping it nice and dry. The LimbO sleeve is still soft enough to allow your hand to grip, useful for your soap or shampoo! Created using strong materials and an all welded seam the LimbO is a durable waterproof solution that will provide a long-term solution to the problem and difficulty of showering with a cast.