The compatible Autoblow 2 covers are available in 3 different sizes, ensuring a perfect and customized fit. Although the device comes with a mouth cover, you can change it to a vagina cover whenever you wish. Designed by an anonymous amateur, the cover is realistic and has additional texture for your pleasure. Choose size A for a slim penis, size B for a regular penis (the best choice for 85% of men), or size C for a very thick penis.