Expand your pleasure and your orgasms with the Ram Inflatable Vibrating Anal Expander. While the plug’s initial 1.4 inches diameter might seem small, just use the included pump to increase the size to your perfect fit. Made of PVC and 5.5 inches long, the plug also brings vibrations to the table with its included remote. The Ram Inflatable Vibrating Anal Expander requires 2 AA batteries, not included.