What if an airbag literally stands for a bag with air-filled?
Airbag is a transparent plastic backpack made of PVC sheets and plastic zippers. Air can be filled through the valve, protecting the contents inside, and being waterproof. It can also be used as a cushion and easily stored by removing air when not used. The cheap materials and simple manufacturing process make Airbag affordable for many people to be a fashion item.
Easy to open and close with plastic zipper
Inflated to be an air pillow