Every Aneros Progasm Ice is a one-of-a-kind. The production process creates a unique air bubble, making each one unlike any other. The sleek design provides an intense prostate massage backed by our patented hands-free design. Despite its appearance, the Ice is not made of glass. Rather, it is made of an award-winning, FDA approved, medical and food grade plastic which is rapidly being used as a replacement for glass because it does not break. The production of this plastic also emits less gases than other types, making the manufacturing process better for the environment. Largest Aneros model. Bubbles make each one unique. Round perineum tab design. Kundalini "K-Tab" provides additional sensations. Has size, but is very mobile. For advanced and experienced users. Made in the USA from FDA approved materials.