It's used for outdoor , backyard,playground ,amusemnet park ... tent,inflatable arch,inflatable cartoon,tang-lung chau,children`s entertainment city,inflatable slides,inflatable jump bed,inflatable castle, ... zipper cover, which is help to disperse the zipper's stress.SAFETY BLOWER PIPEFor the pipe connet with blower ... wait for a few minutes.5, If the device's pressure is too soft, check there if there ...