This dildo is made of glass. The glass is transparent and has blue spirals on the inside for a unique look. Glass is a strong, hygienic material that feels smooth. It can be used in combination with any type of lubricant. The dildo has a flat base, which makes the dildo safe for anal penetration. The slightly bent shaft makes it possible to stimulate the prostate or G-spot. Clean the dildo before and after use for a safe and hygienic use.