Autoblow 2 compatible sleeves come in 3 different sizes, ensuring that you get a perfect, customized fit. Although the machine comes with a mouth sleeve, you can swap it out for a vagina sleeve any time you want. Moulded from an anonymous amateur model, the sleeve is lifelike and extra textured for your enjoyment. Select the A size for a thin penis, the B size for a regular penis, the best choice for 85% of men, or the C size for an extremely girthy penis.Size A 3-4 Inches Girth Size B 4-5 Inches Grith Size C 5.5-6.5 Inches Grith