The internal skeleton of a sex doll determines its flexibility, poseability, and durability. Entry-level skeletons in budget dolls are typically simpler and less articulated than premium models, but they still allow basic movement and realistic positioning.

Most budget skeletons feature limited joint mobility. Elbows, knees, and shoulders may bend but not rotate fully, restricting certain poses. The materials used—often lightweight metal or plastic alloys—are cost-effective yet durable enough for everyday use.

Lightweight skeletons make the doll easier to move and store, which is advantageous for beginners or those with limited space. However, less robust joints may loosen over time if subjected to extreme pressure or frequent repositioning.

Some dolls include slightly more advanced skeletons with reinforced joints or partially poseable hands and feet, providing extra versatility for roleplay or photography. Even minor improvements in skeletal design can make a noticeable difference in usability and visual realism.

Ultimately, understanding the limitations and benefits of entry-level skeletons helps buyers choose dolls that suit their intended use. For budget-conscious shoppers, simple skeletons strike a balance between affordability, poseability, and durability, making them a practical choice for beginners or casual users.