ALX Care Menstrual Cup is made of high-class medical silicone,which does not contain irritation and absorption character and is widely used in health care products, such as baby pacifiers,catheter etc.This product doesn't contain dioxins and allergic substances,meanwhile there is no peculiar smell and wet situation while using,and daily activities are not restricted during its valid 10 years. Instructions: S-suitable for the women that less than 25 years or haven't birth L-suitable for the women that more than 25 years or have birth. User Manual ALX Care Menstrual Cup effectively collects blood, making it 100% securely sealed inside, and thus eliminating the bacteria that otherwise would occur through the air. In addition, it helps eliminate any possible bad smell, itchy skin, or allergy, and hence preventing any possible occurrence of medical conditions that might require gynaecology. Overall, it gives you that lovely experience of the dry, the pure, the fresh! before using your menstrual cup for first time 1.Wash your menstrual cup with warm water. 2.Practice folding your menstrual cup 3.Read and follow the insertion / removal instructions Sterilization: At each menstrual period, please boil your cup in bubbling-boiling water for 3-5 minutes before the first use, and repeat the same after the last use. First time user's are requested to try it before periods so that it will be easy to use while periods.