gummy/plastic
Foam will insulate better than plastic.
It depends on the manufacturer and the type of vest made - it could be some plain old plastic foam to something like neoprene.
Assuming the foam is from furniture stuffing, then the answer is no. Such foam is plastic and is definitely not edible.
Yes
One can find information about plastic foam, also called microcellular plastic, by reading about it in a rich dictionary, on Wikipedia or website 'Forms'.
plastic because foam can get a hole in it easier and can cause your kool-aid to spill out on your pants
It is a foam related plastic.
bye
Polyurethane (PUR and PU) is a polymer composed of a chain of organic units joined by carbamate (urethane) links. While most polyurethanes are thermosetting polymers that do not melt when heated, thermoplastic polyurethanes are also available. Polyurethanes plastic commonly used in the manufacture of flexible, high-resilience foam seating; rigid foam insulation panels; microcellular foam seals and gasket - in.kompass.com/a/bottles-plastic-for-the-pharmaceutical-and-cosmetic-industry/2071009/
It depends on what the foam is. Foamed plastics usually have a foaming agent in their resin that's composed of a low-boiling liquid (used to be a kind of Freon; I have no idea what they're using these days); the head of the reaction boils it and makes the plastic foam up.
plastic bottle plastic bag Polystyrene foam CD covers Plastic ropes