Hyperlite Power bindings provide excellent fit and support, enhancing your wakeboarding performance. - ALRSHOCK PLATE M It says this. Probably size M? I bought it with a board, but I'm selling it because the size doesn't fit. I haven't used it myself. I don't know how much the previous owner used it, but I don't think there's any damage. This is a used item, so please understand it's sold as-is (no returns, no refunds, no exchanges). I'm also listing it elsewhere, so I may remove it suddenly.