The Asan menstrual cup is designed to be the easiest menstrual cup to insert and remove. It was engineered in the USA and features a ring-shaped stem for easy removal. The cup does not discolour and is reusable for up to 10 years. Choose Light/medium Flow if you can keep a pad on for 6+ hours on your heaviest flow day. The Light/medium Flow cup is smaller and softer. The OneDrop Cleanser is specially formulated by scientists to sanitise silicone menstrual cups. The sanitiser kills up to 99% of bacteria & effectively removes odours & stains. Asan is a social venture, and for every cup you purchase we donate one for free to a woman or girl in need.