WOW Freedom Reusable Menstrual Cup and Wash Post Childbirth - Large (Above 30 Years) Size:Large   Freedom Cup is normally used for 12 hour cycles twice a day, however can be used and emptied more frequently in case of heavier flow. It is safe to use this product overnight and it is suggested to be used first thing in the morning and then just before retiring to bed although it can be adjusted as per individual needs.