A closure system for a beverage container, particularly a beverage can , comprising - a lid , wherein the lid comprises an upper side , a lower side , a drinking orifice and a guide slot which extends along a first axis (A) extending substantially parallel to the upper side of the lid ; - a closure member for closing the drinking orifice , and - an operating member for manually opening the drinking orifice by a user, wherein - the closure member is positioned at the lower side of the lid and connected with the operating member at the upper side of the lid ; - the closure member for closing the drinking orifice is configured to cover the entire surface of the drinking orifice in a closed position; and - the operating member and the closure member are disposed movably along the first axis (A), wherein ▪ moving of the operating member into a first direction along the first axis (A) causes movement of the closure member from the closed position and opening of the drinking orifice , and ▪ moving of the operating member into a second direction opposite the first direction along the first axis (A) causes movement of the closure member into the closed position and reclosure of the drinking orifice ; and - the operating member and/or the closure member comprises a guide member engaging the guide slot so that the operating member is movable along the first axis (A) only; characterized in that - the closure member is fixedly connected with the operating member at the upper side of the lid ; and - the drinking orifice comprises the guide slot . - a lid , wherein the lid comprises an upper side , a lower side , a drinking orifice and a guide slot which extends along a first axis (A) extending substantially parallel to the upper side of the lid ; - a closure member for closing the drinking orifice , and - an operating member for manually opening the drinking orifice by a user, - the closure member is positioned at the lower side of the lid and connected with the operating member at the upper side of the lid ; - the closure member for closing the drinking orifice is configured to cover the entire surface of the drinking orifice in a closed position; and - the operating member and the closure member are disposed movably along the first axis (A), wherein ▪ moving of the operating member into a first direction along the first axis (A) causes movement of the closure member from the closed position and opening of the drinking orifice , and ▪ moving of the operating member into a second direction opposite the first direction along the first axis (A) causes movement of the closure member into the closed position and reclosure of the drinking orifice ; and ▪ moving of the operating member into a first direction along the first axis (A) causes movement of the closure member from the closed position and opening of the drinking orifice , and ▪ moving of the operating member into a second direction opposite the first direction along the first axis (A) causes movement of the closure member into the closed position and reclosure of the drinking orifice ; and - the operating member and/or the closure member comprises a guide member engaging the guide slot so that the operating member is movable along the first axis (A) only; - the closure member is fixedly connected with the operating member at the upper side of the lid ; and - the drinking orifice comprises the guide slot . <EOS>