Principle of reebok automatic inflatable air cushion shoes

Hello, I'm from Reebok counter. In fact, the principle of automatic inflation is the same as manual inflation. It uses an inflation valve and a deflation valve to inflate the airbag. The airbag is bat-shaped and placed on the ankle and foot surface of the shoe. However, the self-inflating extrusion valve is placed under the insole, and the extrusion valve is inflated by the pressure of foot movement, which changes the original way of inflating by hand on the tongue or side of the shoe. In fact, Reebok's unique technical focus is not inflation, but the vent valve. It won't say to inflate until the airbag inflates. When the maximum air pressure reaches 5 Pa, inflation will stop. If you continue to squeeze, it will expand and remain at 5 Pa. This has been tested in the laboratory, the airbag has been inflated, but the barometer has been jumping between 4.9-5 Pa, which is amazing. ...