A cap configured to close a container including a neck is disclosed herein. The cap includes at least one protruding element configured to cooperate with a slot situated on the neck such that the cap goes from a first position to a second position. The cap also includes at least one opening situated on an upper wall of the cap that is aligned with the at least one protruding element of the cap. The cap yet further includes a sealing element configured to impart sealing between the cap and the neck. The sealing element is radially offset relative to the protruding element.