The body of the iRide is made out of firm, smooth plastic. The top of the iRide (probe, bump, and the area surrounding it) is made out of TPR. I'm a little wary of plastic products, and how much weight I was able to put on it was causing me some concern while ordering. Being at 130-150 pounds, the product is more than capable of being able to hold up my weight. The material is odorless, phthalate free, and hypoallergenic. The material cannot be sterilized, so condom use is recommended for sharing or for anal and vaginal penetration. You can use any type of lubricant with the iRide.