This cell phone holder is made of very resistant plastic, it has a 360° rotation, one of its best qualities is that it is 100% waterproof. Characteristics: * Clamp adaptable to 22 mm and 28 mm tube * Its measurements are: 18 cm high by 10 cm wide * It has 3 locks, two on the sides and one at the bottom to best adjust the cell phone * It has an entrance to the loading port.