It is made of high quality polyurethane, aluminium and polycarbonate. The device has two parts, the first is an expanding stem and the second is a handle. The expanding shank is designed for use with headrests 14-18 cm wide. The handle is for devices from 4.7 to 12.9" (~13.5 - 23.5 cm) wide. The arms of the handle are foldable, it is not noticeable when you do not use the grip. The head allows us to freely set any angle of inclination, and rotate the device by 360 degrees.