OneUp is a life preserver that is about the size of a can of soda. It’s self-inflating, reusable and easy-to-throw. Its compact size means that you can always have it at the ready. This all translates to more lives being saved. It automatically inflates when it comes into contact with water and it can be reused by simply replacing the CO2 cartridge and putting it back into the case. This life-saving device easily fits in your backpack, purse or emergency kit. This is a design that will save a lot of lives.