The b-Vibe Anal Dilators Set consists of 4 small-to-large size, body-safe glass plugs designed specifically to open and relax the anal sphincter and rectum—a process that is often referred to as anal training. The progressively larger dilators can be used in preparation of any booty play, to facilitate pleasurable anal sex, or simply for added sensation. These nearly indestructible glass dilators can be used with any type of lubricant and are great for temperature play. Can be used for vaginal dilation.