This is a bag that came with an uvex ski/snowboard helmet. I haven't used it much because I kept the helmet in another bag. It's made of stretchy material. Approximate size when laid flat: 40cm (height) x 43cm (width) There's a snag in the center. Please check the photos (both photos show the same spot). Please refrain from purchasing if you are concerned. Please purchase if you understand that this is a used item. #StorageBag #StorageSack #Bag