Despite its glass-like appearance, the Red Ice is made of an award-winning, FDA approved, medical-grade plastic which is useful as a replacement for glass because it does not break.Like the others in the Progasm family, the large Red Ice features a round perineum tab and also boasts a Kundalini, K-Tab. The K-Tab adds sensations up and down your back that are complementary to the sensations from the prostate.Mobility is a key to success with our products, and despite its size, the Progasm moves inside the mans body to provide a robust prostate massage for incredible pleasure.