The most natural-feeling sex dolls are crafted from high-quality materials that closely mimic human skin in texture, temperature, and flexibility. Silicone and TPE are the primary materials used for this purpose. Silicone dolls tend to be more durable and retain their shape over time, offering a smooth, soft surface that feels remarkably similar to real skin. TPE dolls, on the other hand, are often softer and more elastic, providing a more supple and lifelike sensation. The tactile experience is further enhanced by features like internal heating systems that warm the skin to body temperature, and detailed texturing inside orifices that simulate real anatomy. The level of detail in facial features, hair, and body proportions also contributes to a more authentic appearance and feel. Articulated joints and flexible limbs allow for natural posing, which adds to the overall realism of the interaction. Some high-end models incorporate subtle sensory features like heartbeat simulations or breath sounds, elevating the experience. Ultimately, the most natural-feeling dolls are those built with premium materials, advanced internal mechanisms, and finely detailed craftsmanship, creating an immersive and authentic experience that closely resembles real human interaction.