The pillow can be fully inflated by your hand with about 1 minutes, just gently press the round air pump instead of blowing it with your mouth. After use, you can pull out the air and the fold the pillow to a small square, one pillow weighs only 85g, just put it in your pocket or in your bag, you can take it no matter where and when you go. It is made of PVC flocking composite cloth, which is waterproof soft and durable, and prevents you from bacterium. 2 buttons at the end of pillow make it adjustable and fits for different person. Buttons also make the pillow more steady on your neck, never worry about the neck pillow will slide away. Good to be used for planes, cars, buses, trains, camping, even when you rest in the office, watching TV at home. 4 colors avaliable.