I used this once on a trip, but it didn't fit my neck well, so I'm putting it up for sale. The condition is good, but since it has been used once, please refrain from purchasing if you are sensitive to this. (It's the type that you don't put your mouth directly on, and you inflate it by blowing air into it.) If you're wondering what kind of product it is, there are introduction videos on YouTube, so I think it would be reassuring to check them out before purchasing. The shipping method is undecided, but if using Yu-Packet Post, I plan to flatten the box and send it in a compact package, so please understand. Please note that returns and refunds are not accepted after purchase.