I purchased this on Rakuten, but I ended up buying the wrong item, so I'm listing it as unopened and unused. This is for adult legs. I have used the arm version of this before, and it was a great help because it prevented my cast from getting wet in the shower. Below is a copy of the product description from when I purchased it. Cast Waterproof Cover for Adult Legs, Long Type Waterproof effect for secure support It can reliably protect bandages and casts in situations where you don't want them to get wet, such as in the bathroom or rain. It eliminates the stress of having to carefully bathe while trying to protect your cast or bandage by putting your leg in a plastic bag and securing it with tape. Waterproof The silicone opening shrinks to fit the shape of your leg, creating a tight seal and preventing water from entering. You can bathe comfortably without worrying about your cast getting wet. Easy to put on and take off 1. Expand the silicone rubber. 2. Slowly insert your leg, avoiding the injured area. 3. Once your leg is fully inserted, adjust the silicone to ensure a tight seal. 4. Shower and bathe without worry of getting wet. Reusable. Made of silicone, it can be washed and used multiple times. It can be folded compactly when not in use, making it easy to store. [Product Details] Size Length: Approx. 103cm Width: Approx. 38cm Bottom width: Approx. 50cm Opening rim: Diameter approx. 23cm Opening hole: Diameter approx. 9.3cm (expands to fit legs up to approx. 23cm) Weight: Approx. 350g Material: PVC, PP, Silicone (Latex-free)