US Patent 10149562 Stackable drinkware

Stackable drinkware includes a mouth having a mouth diameter and a maximum cavity diameter, wherein the mouth diameter is less than the maximum cavity diameter. The drinkware includes a vessel having a closed bottom and open top, and a chute including an open bottom and open top, wherein the open bottom of the chute is coupled to the open top of the vessel. A sealed vessel or chute pre-filled with fluid may be provided, which may be opened and coupled to a mateable chute or vessel, respectively.