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. These progressively larger backdoor dilators can be used in preparation of any booty play, to facilitate pleasurable anal sex or simply for added sensation. Whether you are new to anal play or a seasoned connoisseur, each tapered butt plug is shaped for easy insertion, while the flared base of the plugs provides maximum comfortability for extended wear. If your anal play goal is to insert a toy or penis, we recommend starting off with your fingers and then gradually working to the smallest plug, followed by the next size, etc. If you?re interested in bigger or ?better? things, you can gradually work your way up to the largest anal dilator. However, there is no right or wrong and you can stop or progress to YOUR comfort level. WARNING: Keep the product away from children. DO NOT expose the product to humid places, direct UV or sunlight for an extended period. Product is a reuseable after wash. DO NOT use this product with more than one person. DO NOT place any object inside the cup for use. Safety Precautions: Always clean the product before and after use. We recommend using water-based lube with your toy.