"The press-inflatable U-row pillow is made of PVC material, which is easy to inflate, store, and deflate. It has a built-in air pump, and only needs to be pressed repeatedly for a while to complete the inflation.The inflatable travel pillow supports the head in all directions, supports the head and neck, and effectively relieves neck and shoulder pain. The white button is the exhaust port, you just need to let the air out of the pillow, and easily put it in your pocket or bag, small and convenient. With an ergonomic design, it gently wraps the neck, reducing the weight and burden on the head and neck. Suitable for plane car train bus camping home office sleeping, ultra light portable compact soft, travel pillow. 18 1/10'' L x 10 4/5"" W"