Swimming is fun, but drowning isn't. This life preserver can keep that from happening. It is made of styrofoam, which is a form of polystyrene . The rope around it is also made of polymers. It's made of nylon .
Nylon stands up to water better than cotton or hemp rope.
Playing in the pool is always more fun with inflatable toys, made out of polyethylene and sometimes PVC . As we all know, the kids love the inflatable pool vacuum cleaner toy most of all. The webbing on chairs like this is made from polypropylene . The arms rests, which are also the pontoons which make the chair float, are hollow boxes made of polyethylene . Also for the aquatic couch potato is the float you see dwarfing Stacy.