The skeleton of a sex doll is its internal support structure that supports and maintains posture. Generally speaking, the skeleton of a sex doll is composed of movable joints made of metal or plastic.

First, the sex doll’s frame needs to be strong and durable enough to support the weight and shape of the entire body. Therefore, common materials include stainless steel, aluminum alloy or engineering plastics. These materials have good compression and bending resistance and can ensure that the sex doll maintains its posture without deformation.

Secondly, the skeleton design of sex dolls usually adopts a movable joint structure so that the sex doll can make various postures and movements. These movable joints usually simulate the joint structure of the human body, such as shoulders, elbows, knees, etc., making sex dolls highly malleable and operable, increasing the user’s experience and interactivity.

In addition, in order to ensure the realistic appearance and feel of the sex doll, the design of the skeleton also needs to consider human body proportions and curves to ensure that the body lines and proportions of the sex doll look more natural and realistic.

After having a sex doll skeleton, some manufacturers need to fill it with some TPE or silicone materials to make a complete full size sex doll. Even a single tpe sex doll head has a skeleton inside.