Sex Doll's Zero Reverse Thrust Vagina Function Video

Why do you feel your silicone sex doll is different from a real girl in having sex? The key is your doll's vagina is different from a girl's.

The tight channel and air compression cause this issue. The tight channel increases the friction between the pennis and vagina. And the strong squeezing force makes you ejaculate sooner. The narrow channel creates a confined space like an engine cylinder, which experiences greater resistance form compresed air as it advapces. The powerful counterthrust of compressed air makes the penis difficult to slide comfortably in the vagina. Now you know why your realistic sex doll is different from real girl.

The clever design resembles a woman's uterus to mitigate the effects of air compression within the vagina. It's the Zero Reverse thrust vagina from XT doll. Double layers vaginal wall brings more comfortable tightness like a real vagina.