1. The frame is welded by high-strength special aluminum profiles of aviation titanium; The surface is oxidized. 2. The four legs of the frame are equipped with telescopic tubes, which can be adjusted by the user at will. 3. The seat cushion is made of thickened sponge artificial leather, which is durable and waterproof. 4. PVC handle: no sweat absorption, not easy to break, deformation and long service life. 5. Front: 2 x 5" PVC wheels. Rear configuration: non-slip and wear-resistant rubber feet, which can make users move forward easily, safely and conveniently. 6. Foldable model, light folding, easy operation and reliable structure.