Gynocup Sizes: Small Size of Gynocup is for first-time users teenagers and those who haven t given birth. Medium size Gynocup is for those 25-35 years of age, with usual to heavy flow, and who have given birth. Large-size Gynocup is for those 35 years of age and above, with heavier than usual flow, and have given birth. Benefits: No menstrual odor, No irritation, No dryness, No discomfort, No itching or rashes (caused by sanitary napkin pads). Covers heaviest to lightest flow Spill and Leak-Proof: Made with 100% medical-grade silicone, the cups are highly flexible to fit perfectly and collect blood without spillage. The rim of the cup creates a seal around your vaginal walls ensuring leak-free protection Reusable and Economical: Gynocup Menstrual cups Provide up to 12 hours of proof protection. With proper care and good cleansing, it is reusable for as long as 5 years. Easy to Use: - You can wear a Gynocup menstrual cup during all physical activities and even overnight. It is an ideal menstrual aid for all kinds of sports, traveling, swimming, cycling, diving, trekking, dancing, climbing, or common daily usage. It has no wings or strings and leaves no residual fibers.