What is the Donjoy Cool IROM™? Hinged knee brace, especially designed to aid recovery from knee ligament surgery. When can I use it? To reduce pain & speed recovery following major surgery to the: Anterior Cruciate Ligament (ACL) Posterior Cruciate Ligament (PCL) Medial Collateral Ligament (MCL) Lateral Collateral Ligament (LCL) Which size do I need? Fits left or right knee. Available in the following lengths: Short: 57cm (22.5") Long: 66cm (26") How does it work? The Cool IROM™ (Incremental Range of Movement) has an enhanced design, which provides range-of-motion control that helps speed up recovery from knee ligament surgery. With a setting from 0° to 90°, in 10° increments, the Cool IROM™ gives you precise control over the knees range of motion. A reduction in the amount of foam & padding used in its construction makes the Cool IROM™ more comfortable for summer, while the design of the buckles allows for quick & easy strapping. Please Note if buying from abroad: These products are sent direct from the manufacturer & so lead times will be significantly longer than normal if you purchase this item from outside the UK