Can you swim with life jacket?
Besides, can you drown if you have a life jacket on?
That being said, a life vest makes it easier to keep your head above the surface, but it is by no means a guarantee. Also, note that you can drown with out being submerged, and with very little water being involved at all. This is known as dry drowning.
Also question is, do life jackets work if you can't swim?
It was their life jacket that kept them alive until help arrived. Besides keeping you afloat, life jackets also provide other benefits. Some life jackets are designed to automatically turn you around so that your face is always out of the water. This ensures that you are able to breathe even if you are incapacitated.
Since the average person in water needs about seven to 12 additional pounds of buoyancy to float, a life jacket does not have to support the entire physical weight of a human body. Instead, it supports those seven to 12 pounds, with a few pounds to spare.