This is a waterproof bag from the outdoor brand GOGlamping. I received it as a bonus when I purchased a pup tent from the same manufacturer, so I believe it's not for sale. The size is approximately 29cm wide x 22cm long (please refer to the photos for confirmation), measured by an amateur. The material is similar to a dry bag, with a waterproof zipper to prevent water from entering. It comes with a shoulder strap, so you can adjust the length to your liking and use it as a crossbody bag. It's a convenient size for storing smartphones and small electronic devices that you don't want to get wet outdoors. Although it is unused, it has been stored at home in the original plastic bag it came in from the manufacturer for a long time. I am selling it because I don't seem to have a chance to use it. It has been stored at home and is in good condition. Please understand that this is a used item that has been in someone's possession before purchasing, even though it is unused. *Returns are not accepted to prevent swapping. Please purchase with your understanding.