Thank you for viewing! ☺️ The inside is made of a thermal insulation sheet, so I think it's good for leisure activities. I used it once for a short time. I didn't see any noticeable stains, but it is a used item, so please refrain from purchasing if you are concerned about the details. Immediate purchase is welcome! I do not accept price negotiations. I will fold it to reduce the thickness for shipping. Thank you very much (*^^*) Sanrio Cinnamoroll Cinnamon Pochette Kids