Material and care- Made of PVC flocking material. It is washable, durable, and can be wiped clean with wet wipes.Inflation and use- The portable triangle cushion can be inflated by mouth or with a pump. It inflates and deflates easily for quick setup and packing.Storage and design- Foldable design allows it to be folded flat after use, saving storage space.Portability and practicality- Lightweight and portable. You can put it in your bag and take it with you anywhere and at any time.Use scenarios- Travel and commuting: ideal for planes, trains, or car trips where seating may be less comfortable; easy to inflate for immediate relief.- Office, study, or events: convenient on hard chairs, desks, or seating at gatherings, helping reduce fatigue during longer periods of sitting.- Outdoor activities and daily use: suitable for picnics, camping, stadium seating, and other outdoor or casual seating needs; compact enough to carry in a bag.