TPE (Thermo Plastic Elastomer): TPE is a rubber/ plastic blend. It is extremely flexible, stretchy and malleable. TPE is soft to touch and has an unbelievably authentic skin feel and "jiggle" to it. Injection moulding and body forming techniques mean doll parts such as the labia can be made to look and feel very realistic.TPE is extremely durable with high elasticity properties. TPE is a good conductor of heat, it can maintain its temperature for long periods. TPE is odourless, porous and it can also withstand heavy weight.The nature of TPE may benefit the feel, but it can be problematic for stains (be careful with new/dark clothes) and extra care needs to be taken in sterilising the dolls.Due to the highly malleable and flexible nature of TPE, the final shape of the doll can be slightly different to the shape of the original mould. For example, with a TPE doll, the breasts may hang slightly lower when compared to a doll made from silicone using the same mould. TPE has a "matte" finish, unlike silicone which sometimes has a slight shine to it.The majority of TPE dolls cannot have implanted hair, with a few exceptions. Silicone:Silicone is a very versatile and high-quality material, it is widely known for its use in cosmetic implants, predominantly for its life-like look and feel. Silicone can be made to look and feel hyper-realistic, to the point that dolls can be almost indistinguishable from humans in photography.The majority of hyper-realistic dolls are made from silicone.In general, silicone dolls have much more detail and are often considered more realistic compared to TPE dolls. Silicone has been used in both the medical industry and in product manufacturing for decades. The techniques used in production are very advanced.   Silicone is a strong material, that keeps its shape true to the original mould, it can also withstand heavy weight.Silicone is odourless, non-porous, stain resistant and easily sterilised.The non-porous texture means it has a ‘smooth’ feel to it that can be cleaned easily.Silicone is more expensive than TPE. Although smoother, silicone is generally firmer to the touch and less flexible than TPE.Silicone can become brittle and prone to tearing over time. It can withstand a lot of weight, but fragile areas can be torn if proper care is not taken.Silicone can often have a slight "shine" to it (satin or slightly gloss finish). Many manufacturers offer a "matte" spray finish to combat this look and make the dolls appear more realistic.Silicone dolls can usually have implanted hair, including eyelashes and eyebrows. There are pros and cons for both types of dolls and similarities to both. For example; they are both hypoallergenic, both retain heat well, they can both be bathed or showered for heating, they can both be customised to suit your needs and they both make excellent sex dolls, of course. Ultimately, customers are happy with both, but generally speaking- TPE dolls are less expensive and more commonly produced for their realistic flesh-like properties, and so tend to be more popular due to the smaller price tag.