I purchased this new for the Expo, but I no longer need it, so I'm selling it. It's tall, so it seems like it would be easy to sit on. Diameter: 24 cm Maximum height: 45 cm Folded height: 8 cm There was no instruction manual included when I purchased it. Please refer to similar products for instructions. The Expo is less than a month away, and the lines are getting longer, so please take this opportunity to purchase it. It can be used in various situations such as camping, festivals, and fishing. Although it is unused, please understand that it has been in someone's possession. I will use recycled, used packing materials and ship it in simple packaging.