Comfort cup is a reusable menstrual cup worn internally just like a tampon except it collects menstrual flow instead of absorbing it. Menstrual cup forms a gentle seal with your vaginal walls and any flow is contained in the cup. It is then simply removed, emptied into the toilet, rinsed with water and then reinserted; Menstrual cup is always with you when you need it most ! Comfort cup is non-absorbent so it can be left in place for up to 12 hours with no risk of Toxic Shock Syndrome; you may want to empty it more on heavier days and less often on light ones, it really is your personal choice as long as you always keep to the 12 hour rule. What included in the set 1 MENSTRUAL CUP 1 STERILIZING CUP 1 CLOTH BAG 1 INSTRUCTION MANUAL