By combining a contoured, anatomical-shaped foam with a pre-set, sealed Air Flotation component the AirLite enables clients to sit comfortably for an exxtended time. AirLite's technology and design provides the comfort clients want and the support they need. Most foam cushions will compress over time. The AirLite cushion's pre-set, sealed Air Flotation component provides peaace of mind you can count on long after other Just foam cushions. The AirLite cushion weights about 2.17lbs. 7 sizes available. Weight Cap. 250lbs