Langko Inflatables use lead free, flame retardant, heavy duty commercial grade durable 18oz PVC vinyl, All materials are tested for limited lead and phthalate content, and every inflatable is assembled with operator safety in mind. all seams in our units are double stitched by heavy duty extra strength nylon thread. We use Polypropylene and Nylon reinforced webbing at all stress points. For easy deflation, all our inflatables come with zipper slots and hook-and-loop sealed flaps for extra protection. We pioneered and developed new safety futures and enforcement techniques unique to our products to ensure a longer life. Every stitch, every thread is subjected to a rigorous multi-point inspection process, ensuring every product meets and exceeds international safety standards. Our quality control department strictly follow international standards to check every finished products details at least three times which can guarantee all delivered products with good condition. This meticulous attention to detail help us to earn many stable customers who continue to return orders.