Source: Twitter
This new device called "Kingii" can save a life while swimming. This wearable device is a bracelet that you wear while swimming, if you're in trouble, pull a lever and a flotation device comes out of the bracelet to bring the person above water. You could wear this during any water activities like swimming, fishing, surfing, etc.
This is a great idea for kids or adults! It's probably a lot less bulky than other options that may be out there!