Mustang PFD Inflatable Belt Pack
Compact and out of the way, this belt pack straps around your waist so you can still get that great tan while staying safe. The PFD inflates manually by pulling the inflation cord and there is a backup oral inflation tube in case of failure. There's a little status window which shows green when the PFD is ready to go, and a safety whistle is attached to the vest. The inflated vest has a buoyancy of 38lbs, far more than foam PFD's.
After 5 years, or if you have inflated your PFD, you can easily recharge it with a new inflation kit.