Use compression spring rods to stabilize the car sleeper's metal rod on both sides. In just a few seconds, release your hands and transform into a car animation theater. To safeguard the cervical spine, the bracket's orientation angle can be changed as needed. Anti-slip support and an extra-lick silicone cushion Mobile phone or tablet device, 4.7" to 12.9" Wideness is adjustable with a push-type design. Length: 110mm is the shortest and 150mm is the longest.