2-in-1 Universal Cup & Phone HolderMaterial ABS, SiliconeSize: 21*9.5*10.5cmApplicable Cup diameterBottles, water cups, suction bottles, and bottles below 8.5cmFunction: It can be clamped on the tube of an IV Pole, wheelchair, walker, scooter, bicycle and baby carriage, Designed to place mobile phone, cup or bottle. Support pipe diameter clamp: 2-4.5cm