Huge, perfect for airsoft games, etc. Bottom diameter: 50 cm, Height: 50 cm, approximately. I used to use this when traveling for work. Easily fits a week's worth of stuff. It's an old story, but I think it was a prize from Nippon Oil's One-Up campaign. The one from Tokoro-san. Both the bottom and inside are incredibly clean. No stains, no dirt, no tears. Rare, I don't think anyone else has one?? #Military #Camouflage #Airsoft The fabric is probably nylon, seems strong. For a super big guy!!