I received this at a summer festival this year, but I no longer need it, so I'm putting it up for sale. Approximately 55 cm long. I've stored it inflated, and there doesn't seem to be any air leakage, so I don't think there are any holes. There's no check valve or anything like that, so you have to block the air hole, meaning you can't inflate it completely. I plan to deflate it and ship it via Yu-Packet Mini, etc.