Dial up your derrière with the new b-Vibe Glass Anal Dilators Set! The Glass Anal Dilators Set consists of 4 small-to-large size, body-safe glass anal plugs explicitly designed to open up and relax the anal sphincter and rectum- a process known as Anal Training. Use the versatility of glass to heat up or cool down your plugs for added sensations and titillating new anal experiences. Made of 100% borosilicate glass that is fracture resistant, shatterproof, easy to clean, and body safe.