Master Series Expander Inflatable Anal Plug with Pump. Take anal play to the next level with the Expander Inflatable Plug. This innovative design consists of a classic expanding butt plug with an integrated medical style hand pump, which can be removed once you have reached your desired size. Once removed, the plug is designed to keep its size until you are satisfied. Features an easy release valve for quick deflation. This all in one expander set is travel friendly and phthalate free. Measurements 11 inches in total length deflated. 5 inches insertable, 1.5 inches diameter. Inflated 7 inches insertable, 4 inches diameter. Materials Latex, Thermoplastic Rubber TPR, metal. Color Black.