How the suction base works this  (similar to the tentacle sucker principle of gecko and octopus). At the bottom of the not pour mug, there is a small but powerful air valve. With the help of air pressure, the cup is tightly pressed on the table. When you take not pour mug and force it upward, the air valve will automatically unlock, so you won’t feel any trouble. not pour mug relies on its own attraction to squeeze out the air between the contact surface, and uses atmospheric pressure to increase the pressure between the contact surface to increase the friction, so as to prevent the placed objects from sliding. When using, the smooth side faces down, that is, the smooth side contacts with the dashboard. There is a bump texture, or the side of the text pattern is up.