life preserver
preserver
flotation device

If nothing works, he might need to throw himself a life preserver.

It is like a rock wrapped in a life preserver.

"Why don't you go make sure everyone has a life preserver?"

I asked him, looking about for the nearest life preserver.

He's hanging on to her like she's a life preserver.

His first thought was to get a life preserver on.

Many passengers died for lack of knowledge on how to use the life preservers.

There had been no time to get out the life preservers.

All life preservers were moved on deck, ready for use.

But that has not stopped members of Congress from demanding life preservers.