Hmmm. Just had a look at the RFD SOLAS. $89.95. I think you get what you pay for. It is a quick donning PFD not one to wear in the confines of a cockpit in a small plane well I wouldn't wear it in mine that's for sure. Be OK in a commercial passenger plane maybe. I think it would be OK in a boat.
LIFEJACKET RFD SOLAS
The HM survivor has a crotch strap as well so there is no way it can accidentally slip over your head