Will my vest turn me over if I am unconscious and face down in the water?

There is a difference between a life jacket and a PFD (personal flotation device). 

A PFD is designed for constant wear where comfort and flotation are the critical issues. A PFD will float you, but not self-right you (turn you over in the water). 

A life jacket will turn your face up in the water, but the foam-filled varieties are bulky and less comfortable to wear. Typically, life jackets are horseshoe-shaped in design and slip over your head with all of the flotations in the front of your body up around your neck. 

Both exceptional comfort and self-righting performance are now available to you with Mustang Survival inflatable life jackets. These products carry U.S. and Canadian Coast Guard approvals, depending on the specific model.