Tumbler Cup

- May 30, 2019-

The tumbler cup is a vessel involving a cup-shaped container, which is characterized by: light upper and lower inner space, thickened arc-shaped bottom, weight concentrated at the bottom center of the cup body, small bottom contact surface, and cup body when moving Can be shaken. The tumbler cup, the cup mouth, the cup wall and the cup bottom are connected in a circular arc shape, and the feature is that the bottom contact surface is small, and the cup body can be shaken when moving.