The SX5 Deluxe model comes in 5 seat sizes 40.6cm – 56cm, two weight capacities: 113kg and 136kg,two back heights: 40.6cm- 45.7cmand two types of fabric: Nylon or Vinyl. The frame weighs only 15kg making it easy for lifting into a car. The SX5 also comes with a dual axle making it easy to adjust your seat height.