Well spoken Mike. I cant understand why people get so worked up about it...
may be because calling it "safety flotation device" would be at least incorrect.
but, 1968, if you are affiliated to this product it would be lying to the customer.
they even don't call it "safety flotation device" on their website. and for the good reason - because it is not.
for that bladder to be "safety flotation device" it needs to pass lots of rigorous tests and get certified by some official organization.
for me it is more like "potentially floating device" with single purpose: making money for its creators.
and how does it work? well, you fell for the advertizing and bought one of these toys for 89€. then you naturally would like to test it and you use couple of spare cylinders (6€ piece). then, of course time after time you are obliged to show off in front of your friends and waste more and more spare cylinders. and you never know will the next cylinder blows up that bladder or not.
only positive thing about this thing is that it probably makes your cold dead body more visible in the water for the rescuers...