The best way to cool off in the hot summer is to go swimming, but no matter how good your swimming skills are, you should bring a lifebuoy with you in case of emergency. Kingii is a life-saving airbag designed by American designer team Tom Agapiades that can be worn on the wrist. It is claimed to be the smallest life-saving airbag in the world so far. Kingii is very easy to use, just put it on your wrist before swimming, and it is also very convenient to carry. In the event of an emergency, the built-in carbon dioxide airbag can be quickly inflated and popped up in an instant to prevent accidents. The working principle is a bit like a car airbag. When a second use is required, the gas in the air bag must be squeezed out and replaced with another air storage box.
