Conversation so far:
what is meant by bean bag without beans
Bean bags can be filled with polystyrene or thermocol beans or with air, called a bean bag without beans. Sometimes the term can refer to just the bean bag covers
do bean bags last a long time
A good quality bean bag is supposed to last for around 3 to 4 years without changing the beans.
are bean bags good for the back
Bean bags are not as good for your back as many sellers claim. They don't conform to your body shape any better than a good sofa or a foam mattress.
can bean bags be toxic
Some bean bags packaged for sale in parts of the U.S. have warning labels affixed stating that the materials may be toxic or cause cancer.

Question: what materials cause cancer
Self-contained rewrite: what materials in bean bags cause cancer