When people ask, "How realistic can life size sex dolls be?", the first question to answer is the material. Take RealDoll, an industry benchmark, as an example. They use medical-grade platinum silicone to encase a steel frame. This material, originally used in medical implants, is non-toxic and harmless to the human body, and its texture is extremely close to real skin. When you touch a high-end life size sex doll, the warm, delicate, and bouncy feel is incomparable to cheap PVC or ordinary rubber. Taobao reviews show that high-quality silicone can be up to 4.5mm thick, with strong rebound and good support after being pressed, while inferior products are only 2mm thick, resulting in obvious dents. It is this almost demanding pursuit of materials that allows life size sex dolls to achieve a level of realism in terms of touch. Many users' first reaction upon unboxing is, "Is this really not real?"—this exclamation is the best testament to the realism of the material.