If you’re a doll owner and would like to know how to change the vagina depth on a sex doll, we can say with all certainty that you cannot do that without destroying your doll. Plus, sex dolls have an average vaginal depth of 7.1 inches when the depth of a human vagina averages 3 to 7 inches . However, if you have a sex doll with the removable vagina, you can easily purchase a new vagina insert that is made to be smaller, tighter, bigger or deeper.
However, you can be assured your sex doll’s vagina is deep enough to accomodate a large penis and you can thrust fully without causing her any damage. Additionally, the sex doll’s vagina is made from silicone or TPE, making it soft, squishy and inviting.