You’ll see this type of material show up as TPE (thermoplastic elastomer), TPR (thermoplastic rubber), PVC, or simply just as jelly or rubber. Regardless, it is typically an elastomer or rubber blend, resulting in a soft, flexible, jelly-like texture and feel. It is a porous material and therefore retains more bacteria, so you'll want to be extra cautious when cleaning them or if it’s a dildo, try using a condom over top!