This is a prize from a convenience store lottery. It's a waterproof bag with a design from "A Place Further Than the Universe" Antarctic Challenge. It comes with a strap to wear over your shoulder. The strap is shown in the fourth photo. The size is 310mm wide, 430mm high, and the bottom is oval. If you pack it full, it'll be like a sandbag. It was opened for photography, but it's unused. - Brand: YORIMOI PARTNERS - Design: Antarctic Challenge - Material: Waterproof material - Features: Penguin illustration Thank you for looking.