A fabulous container for sterilizing your cup. It folds up for easy disinfection. 100% medical-grade silicone Maximum inner diameter: 7 cm Total length: 8.6 cm Phthalate-free Compatible with most menstrual cups How to use: Fill the container with water, place the menstrual cup inside, and boil it in the microwave for 2 to 3 minutes with the lid open. With this simple method, you can sterilize your menstrual cup easily and effectively in less than 5 minutes. Because of its size, you can take it anywhere. Effective and fast!