This is a 2-in-1 collapsible silicone ice ball maker cup with a straw and lid.
This Cup serves two primary functions:
Ice Mold Mode: When collapsed down (as seen in the hand on the left), you fill it with water and freeze it to create a single large, spherical ice ball.
Drinking Cup Mode: Once frozen, you expand the telescopic silicone body upward (as seen in the hand on the right) to turn it into a portable travel tumbler. You can pour coffee, juice, or whiskey directly over the internal ice ball and sip it through the included straw.