If you aren’t familiar with sex dolls in general, you may be asking, “What does a sex doll metal skeleton mean?” As a whole, it means that high-quality, realistic sex dolls are created with a metal skeleton inside. The skeleton, much like a human’s skeleton, holds the body together and allows it to bend and move.
While the human body is capable of much more movement, a metal sex doll skeleton allows a doll to be moved and posed in many positions that a human can achieve. However, since metal skeletons don’t have tendons and muscle to protect the joints, a sex doll is more prone to wear and tear and damage if pushed into unnatural positions.