Cheaper sex dolls are inflatable, using air. These dolls, representing the lowest price-range (less than US $75), are usually made of welded vinyl and bear only a passing resemblance to actual people. They have an artificial and typically crudely designed vagina or penis, but due to their affordability many users are willing to overlook their shortcomings. They often burst at the seams after a few uses, although they are commonly given as gag gifts and therefore many may not be used at all. In Russia for some years the Bubble Baba Challenge humorously featured participants river rafting on blowup dolls as a matter of entertainment but in 2013 the race was cancelled on "health and safety" grounds.[10]
A sex doll (also love doll or blowup doll) is a type of sex toy in the size and shape of a sexual partner for aid in masturbation. The sex doll may consist of an entire body with face, or just a head, pelvis or other partial body, with the accessories (vagina, anus, mouth, penis) for sexual stimulation. The parts are sometimes vibrating and may be removable or interchangeable. Sex dolls exist in many forms, but are distinguished from sex robots, which are anthropomorphic creations designed to be able to exhibit more complex interactions.
With TPE there are many pros that many like to consider, and it I important to keep these in mind when you are buying one. For starters, TPE is way softer. It’s super soft, and you’ll notice that it feels realistic. If you’re getting this doll in order to help with sexual release, or to help prepare you for sexual encounters later on with someone else, this might be something to consider, since it is a whole lot softer, and it feels way better as well. If touch is your thing, then you should consider this.
An artificial vagina is a device designed to imitate the female sex organ. To achieve this, it will generally be made of a soft material, lubricated, and sometimes heated. An artificial vagina for the purposes of sexual stimulation is essentially an aid to human masturbation; and is also known as masturbation aid, masturbator, or pocket pussy. It is designed to simulate the sensation of sexual intercourse on the erect penis and to induce orgasm and ejaculation.

There are many brands of dolls on the market. OVDoll has all styles of WM and Z-onedoll. WM doll and Z-onedoll are famous in the market. WM doll is famous for various styles and it has grown to be a corporation with great influence in the field. Z-onedoll is famous for his doll with sounds and heating function. These functions are hard to implement for other companies. We have our own factory. But we are also the agent of these two manufacturers, we have been in good partnership all along. We can offer competitive prices.
Now, TPE stands for thermoplastic elastomer, which is essentially a mixture of polyvinyl chloride and silicone. This is a type of skin that is very soft, and it mimics the feeling of human skin. TPE is way more realistic in feeling and it definitely mimics the feeling of human skin. It also is much cheaper than silicone alternatives, sometimes even hundreds of dollars cheaper. TPE also allows you to move the doll around in various ways, since it has more flexibility. TPE dolls don’t really need to be bathed, but you can, just be mindful of the water. It also is hypoallergenic as well. 
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