A female sex doll’s realism hinges on multiple interconnected features. First, lifelike facial features with detailed eyes, expressive eyebrows, and natural skin tones create an authentic appearance. The skin’s texture—soft, flexible, and warm—mimics human touch, often achieved through advanced silicone or TPE materials. Anatomically accurate body proportions and movable joints facilitate natural positioning and movement, enhancing realism. Additionally, realistic hair, whether synthetic or natural, adds to the authenticity. Sensory features such as responsive touch, temperature control, and even subtle vibrations contribute to a more immersive experience. Facial expressions and eye movements, when incorporated, further deepen the illusion of life. The combination of visual accuracy, tactile sensation, and responsive behavior collectively defines what makes a female sex doll truly realistic. As technology progresses, integrating AI and sensory feedback systems will continue to elevate these features, making the experience ever more convincing.