DOCTOR-INVENTED. The only menstrual cup on the market designed by a women's health doctor to accommodate your unique anatomy. Three sizes are available: low cervix, petite, and regular for a perfect fit. CUSTOM-FIT AND COMPLETE COMFORT. The patented "wine glass" design with an inner ring forms to your shape, stays put to prevent the cup from being pushed out, and is easy to remove. The cup forms a gentle suction, which can even reduce cramping. (Yes, you read that right!) PATENTED NO-LEAK AND NO-SPILL DESIGN. Say goodbye to leaky tampons. With this menstrual cup, you will have 12-hours of leak-free protection, easy spill-free removal, and a secure fit you can trust.