Abstract: A menstrual cup for use in a vagina. The cup includes a receptacle extending from an open top end to a closed bottom end and a stem attached to the receptacle at the bottom end thereof for use in removal of the cup. The receptacle comprises a wall having an inner wall surface defining a cavity adapted for collecting fluid and an opposed outer wall surface. The open top end has a predetermined diameter, the receptacle being adapted to be flexible and resilient. The outer wall surface includes an upper rim at the top end of the receptacle for strengthening the top end, a main portion extending from the bottom end of the receptacle portion towards the top end, and a transition portion between the main portion and the upper rim, the transition portion being streamlined to define a profile thereof which is substantially smooth.