A teat unit comprises a flexible teat (4), a receiving head (3), a dimensionally stable base part (2), anda venting valve (23).The teat (4) is arranged on the receiving head (3) and the receiving head (3) and the base part (2) are connected to each other by a releasable connection. The venting valve (23) is arranged in the base part (2). The teat (4) comprises a circumferential edge (41), wherein the circumferential edge (41) is clamped between the receiving head (3) and the base part (2) when fitted in the correct position of use on a drinks container.一種奶嘴單元,包含:一個撓性奶嘴(4);一個接收頭(3);一個尺寸穩定之基座部件(2);以及一排出閥(23)。所述奶嘴(4)係配置在該接收頭(3)上,且所述接收頭(3)以及基座部件(2)係藉著可釋放的插塞連接而被連接到彼此。該排出閥(23,28)是配置在基座部件(2)中。該奶嘴(4)包含一周圍邊緣(41),其中當被裝配在位於飲料容器(1)之正確的使用位置之中時,該周圍邊緣(41)是被夾在接收頭(3)與基座部件(2)之間。