... -size air pump×1, black sandbag×2, ground anchor×4,back-up valve Usage RangeIdeal for children, can be used in family ... automatically, press the button, make it out faster.Setting up and packing up our products need just 3~5 minutes totally. ◊ Comparison ... Diagram of time consumed to set up goals 1) DURABLE ◊ MaterialEvery joint of our products is made ...