The realism and durability of male sex dolls largely depend on the materials used in their construction. The most common materials are silicone and thermoplastic elastomer (TPE), each offering distinct advantages. Silicone is prized for its high durability, heat resistance, and realistic feel. It is less porous than TPE, making it easier to clean and maintain while also resisting tears and punctures. Silicone dolls tend to be more expensive but offer long-lasting use. TPE, on the other hand, is softer and more flexible, providing a more lifelike skin texture that mimics human softness and elasticity. It is generally more affordable than silicone but requires more careful maintenance, as TPE is more porous and can absorb oils or dirt if not cleaned properly. Some manufacturers also use hybrid materials or incorporate internal structures like metal or plastic frameworks to enhance stability and poseability. The choice of material impacts not only the feel and appearance but also the weight and maintenance routines of the doll. Advances in material science continue to improve the realism, safety, and sustainability of these products, offering users a wide range of options to suit their preferences and needs.