The trolley is made of high-strength aluminum, it is light and easy to clean. The height can be adjusted in four positions. The mattress is seamless welded with sealed high density polyethylene coated nylon material, it's waterproof, thickness 35mm. Only one medical staff is needed to push the stretcher onto the ambulance. The leg folding mechanism is controlled by the handles on both ends. It is mainly used in hospitals and funeral cars for transporting.