High strength PVC material is used and flocking material is used on the surface. Dimensions: Double (54" x 34" x 28") Weight: Double (7.5 lbs) Weight capacity (441 lbs) *Warm Tips:In the initial use, due to the ductility of pvc, the inflatable sofa may become soft within a week, this is a normal phenomenon, not caused by air leakage. Just need to inflate again for 30 seconds to make the sofa more solid. *Note: Please do not wear or carry sharp objects to use the inflatable sofa, after the completion of inflation, please press the inflation valve firmly.