1. Material: aluminum alloy frame, fog silver surface treatment, tube diameter: main frame 25.4MM tube thickness: 1.25MM; 2.Cushion for the motherboard design, comfortable and waterproof, suitable for thinner or hemorrhoids people use, equipped with a lid toilet, out of bed can be toilet, closed odor, corrosion resistance and easy to clean; 3. environmental protection non-toxic non-stimulation PE backrest + PVC soft sitting board, the product through the in vitro cytotoxicity test, the use of non-toxic non-stimulation in contact with the skin, third-party test report can be provided; 4. 4-inch universal wheels, iron plating white zinc treatment, wheel surface made of TPR. 5. Load capacity: 150kg