They make all sorts of things with carbon fiber and now they have made a sporty butt plug out of the stuff and the result is the Blush Small Spark Butt Plug. Carbon fiber is light and strong so it is easy on the hands and robust when used. Beginners are encouraged to try it as it is easy to slip in and holds securely. The Small Spark Plug is 4 inches long and has an insertable length of 3 inches. At its widest it is only 1.6 inches and is about 5 inches in circumference. Experienced users are sure to like it as well at these dimensions.
I took it out of the box and took it for a "shower." It was a 45-minute shower.