Abstract: A lid for a drinking container includes a circular upper portion including a bayonet fastening device, and a circular lower portion including a counterpart bayonet fastening device. The circular upper portion includes a first and second openings and the circular lower portion includes corresponding first and second openings. The bayonet fastening device of the circular upper portion and the counterpart bayonet fastening device of the circular lower portion are configured to be coupled with each other so to guide the circular upper portion and the circular lower portion to be turned in relation to each other around a common axis in a manner enabling the first openings being aligned and the second openings being aligned in an opening position, and enabling the first openings being un-aligned and the second openings being un-aligned in a closing position.

Abstract: A lid for a drinking container includes a circular upper portion having a groove portion extending on the circumference of the circular upper portion, and a circular lower portion having a counterpart groove portion extending on the circumference of the circular lower portion. The circular upper portion includes first and second openings and the circular lower portion includes corresponding first and second openings. The groove portion of the circular upper portion and the counterpart groove portion of the circular lower portion are configured to be coupled with each other to guide the circular upper portion and the circular lower portion to be turned in relation to each other around a common axis in a manner enabling the first openings being aligned and the second openings being aligned in an opening position, and enabling the first openings being un-aligned and the second openings being un-aligned in a closing position.