What kind of plastic is used for the airbag bracket of mobile phone?

Here I want to publicize the material selection of my mobile phone airbag bracket: PopSockets are American brand mobile phone accessories. The front is made of thermoplastic polyurethane elastomer, which is resistant to high temperature and water, and is not easy to crack and deform. It also has patented airbag technology, and the back is nano-gelatin, which is not easy to stick when torn off, which is quite good.