This soft jelly butt plug is small enough to be used as an anal trainer but can also deliver incredibly strong multispeed vibrations through its 3.5 inch long shaft. It has 3 bulbous sections varying in diameter from 1.4 inches to 0.75 inches and also has a flared base to prevent it from being inserted too far. This anal plug is also waterproof. 2 AAA batteries are included.