Rael Reusable Cup Case According to the brand, storing your cup properly in this case can prolong the life of your menstrual cup for up to 12 years! (How many boxes of tampons do you think that is?) The Rael Reusable Cup Case ($20) is water resistant and features tiny holes to create a breathable environment for your cup. Image Source: amazon.com Rael Reusable Cup Case $20 from amazon.com Buy Now