Creating a sex doll that moves realistically involves a combination of advanced engineering, materials science, and meticulous craftsmanship. Manufacturers utilize internal frameworks, often made of lightweight metals or durable plastics, to provide structural support while allowing flexibility. These frameworks can be embedded with motors or actuators that enable limited movements such as head turning, arm lifting, or joint articulation. To enhance realism, manufacturers incorporate high-quality silicone or TPE (thermoplastic elastomer) skin that mimics human texture and flexibility. The skin is carefully sculpted and textured to resemble real skin, including features like veins, pores, and even subtle imperfections. Some dolls are equipped with sensors and tiny motors controlled by sophisticated software, allowing for programmed or remote-controlled movements. The integration of servo motors within joints permits controlled, smooth movements that emulate human gestures. Additionally, manufacturers pay close attention to weight distribution and joint mechanics to ensure natural motion without rigidity or stiffness. Advanced designs may include features such as breathing mechanisms, eye movement, or even subtle facial expressions to heighten realism. Through continuous innovation, these efforts aim to bridge the gap between static figures and lifelike, dynamic companions, offering users a more immersive and authentic experience.