Some people really get aroused by pressure that originates from inside the anus. Unfortunately, the rectal opening can only accommodate a certain size before the tissue can tear. Luckily the answer to the need for more girth lies in inflating butt plugs. They insert with the same size as a normal plug then you inflate air into the expanding latex balloon which makes it grow inside.
Other styles of inflatable anal toys include the probe which expands evenly in a straight line. The butt plug shape is more popular because it has the ability to grow larger then the probes. Additionally, many of these vibrate too which throws a softer muted tingling and they tend to be very quiet when worn.
