This is a YuHaru adult waterproof cast cover. I used it a few times, but I'm selling it because I no longer need it. I purchased it on Rakuten. Photos 5-9 show details such as how to use the cover and its size. It's very easy to put on, and the seal is tight, so no water got in, which was a great help. It can be used for both legs. The size is quite large, so even tall people should have no problem using it. Thank you.