When evaluating the realism of sex dolls, the authenticity of body parts like breasts and buttocks is a critical aspect. The realism largely depends on the materials used and the manufacturing techniques. Most high-quality dolls feature breasts and buttocks made from flexible, skin-like materials that mimic the softness and texture of natural human tissue. Silicone-based components often provide a more lifelike feel because of their density and elasticity, closely resembling real skin. TPE (thermoplastic elastomer) is another popular material, offering a softer, more malleable surface that can be textured for added realism.
Design and craftsmanship also influence perceived realism. Sculptors meticulously craft these body parts to resemble natural anatomy, paying attention to proportions, skin folds, and surface details. Silicone breasts tend to feel firmer yet supple, with a realistic weight that mimics natural tissue. Buttocks made with high-quality materials can achieve a plump, rounded appearance, with texture and firmness that respond naturally to touch. Some dolls even incorporate internal support structures to enhance firmness and shape, further boosting realism. Overall, advancements in material technology and detailed craftsmanship have significantly improved the authenticity of sex doll breasts and buttocks, making them almost indistinguishable from real skin for most users.