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Some unexpected accident, such as cramps, could happen when do activities in water. In this case, equipping well against the accident yourself is better than asking for help that might not come in time.
The design of this automatic inflatable life-saving device, which includes two half-flap closure with buckle and a shell imitates the car airbag. Pulling the buckle, then the bag expand to form a life-saving buoy. Inflatable airbag gets rid of the shell and get connected to the shell with an elastic line. Thanks to the small size,light weight and reasonable shape, it could facilitate self-helping and meet the need of doing activities in water.