Air-Leakage Proof Lazy SofaRelax in Style & Comfort with Our Air Leakage Proof Lazy Sofa Air Leakage Proof : Once inflated, this air couch will stay inflated for at least 5 6 hours. The air sofa is made of superb craftsmanship and high quality polyester 20T, PE, manganese steel. The maximum load and can withstand all kinds of flat surfaces, including sand, grass, snow, water & even travel. Easy To Set Up : Portable inflatable lounge chair can be easily inflated without a pump.