Purchased 2 years ago and used only twice for a short time at home. Current online retail price: 8,360 yen My child was the type who slept a lot, so I stopped using it quickly and stored it at home. It's a mesh type, so I think it's less likely to get stuffy with sweat. The length is adjustable, so my husband and I can share it. There is no box or instruction manual. Please understand that there may be oversights as it is a casual inspection. I will sell it to someone who understands that it is used. Please check my profile before purchasing.