Polyvinyl chloride (PVC) is a durable petrochemical thermoplastic that can take many forms. 

Chlorine which forms the base for the material and dioxin which is created during the production of PVC are heavy environmental pollutants. According to WHO, Dioxin is known as one of the most toxic chemicals ever produced. It may disrupt the hormones of animals, causing birth defects, infertility, and developmental problems with their young. PVC can also cause harm to humans' health when burned. 

PVC can be recycled repeatedly up to 8 times depending on the application. A more sustainable alternative to this material would be natural rubber, latex or cork.