Water wings, beach balls, lounge chairs, floating pool toys. What do all of these things have in common? They CAN NOT be recycled.
Almost all of them are made of polyvinyl chloride (also known as PVC, or by the recycling number 3), which is one of the hardest plastics to recycle. It is also one of the most dangerous plastics to use, as it is full of chlorine and heavy metals and is a known human carcinogen.