Material selection plays a critical role in determining a sex doll’s realism and longevity. TPE (thermoplastic elastomer) is favored for its soft, flesh-like feel, offering a highly realistic tactile experience that mimics human skin. Its pliability allows for flexible movement and natural posing, making interactions more authentic. Silicone, on the other hand, provides a firmer, more durable surface that resists tearing, staining, and deterioration over time. When combined in hybrid models, these materials balance softness with resilience, delivering a product that feels realistic while remaining durable under regular use. The choice of materials also affects maintenance; TPE requires careful cleaning to prevent staining and tearing, while silicone surfaces are generally easier to clean and more resistant to damage. Furthermore, material quality influences safety—hypoallergenic options are available in both TPE and silicone, reducing allergic reactions. The right material choice ensures that the doll maintains its realistic appearance and tactile qualities over years of use, providing a satisfying and long-lasting experience. Ultimately, selecting the appropriate materials is essential for achieving the desired balance between realism, comfort, and durability.