The Doll Forum

I know TPE dolls should never come into contact with silicone, but what about PVC?
How about real-feel materials like cyberskin, ultraskyn etc? I think they might be types of TPE

I have an exercise bicycle seat that I put a TPE Boob Ball on once, left it overnight, It left a permanent circular indent the size of the TPE Boob Ball that never went away, I think the seat is made of some kind of Pleather (plastic leather). I am very careful where I put my TPE Boob Ball now Days....