I bought this at Adventure World in Wakayama for my son about 7 or 8 years ago, and he used it a few times. It's been hanging on a clothing rack in the room ever since. There are no noticeable stains, but it wasn't stored in a dust bag or anything. Width: Approximately 25cm Height: Approximately 20cm Thickness: Approximately 5cm Strap: Approximately 80cm Thank you for looking.