Magic Cup Cover

Thesilicone circle acts as a suction cup for just about any standard cup size. once you plop the cup cover over the opening, the suction is so strong that you can actually lift the cup up by the knob at the top. Theres no effort at all in putting the cup cover on. You just literally place it at the opening of the cup and then youre set. No extra pushing or squashing needed. It just automatically creates suction.
Magic Cup Cover