We’d like to introduce you to the world's first collapsible cup that folds flat and fits into a small protective case! You can toss it in your backpack, purse or pocket, and you're good to go. Then, when you need it, it can be popped open for up to 8 hours of non-stop protection. Hassle-free. Size A. If you haven’t given birth or you gave birth by cesarean or you have a light flow, this is a perfect size for you. 100% medical grade silicone Covers light to medium flow Collapses flat into a handy protective case Up to 8 hours of hassle-free protection Reusable and eco-friendly period solution