This waterproof Outdoor Inflatable Air Bag Lounger Sofa is designed with air intake design,you need to use inflatable tools,Need pump pump, easy to store, save space,YMOUTDOOR® is a professional manufacturer and supplier of outdoor furniture in China.Now YMOUTDOOR® China Manufacturer for sale at low price.U shape can effectively dispersing the pressure evenly.The concave bottom design can provide good stablity. The inner surface is coated with TPR waterproof coating,is fit for using at pool,beach and sea shore etc.External removable product sets can be customized according to your pattern. Compliant with ISO Standard.YMOUTDOOR® look forward to being your long term partner.