1Dry and Breathable: 4 small holes are designed on the upper side of the retainer case, so that it can dry easily, and it is not easy to breed dirt, it is more clean and hygienic during use. 2Material: The case is made of plastic material, which makes the retainer case odorless. And it is also wear resistant and not easy to crack, which also leads to a longer service life of the box. 3Lightweight: It's light in weight and perfect for you to carry to work, school or travelling. It won't take up much space of your bag, you can protect your orthodontic appliances anywhere. 4Large Volume: A deeper volume makes false teeth storage case easier to fully soak the dentures or retainers in the box. Best choice for elderly people, toddlers, adults, or any travellers. 5Wide Application: The box is very compact and lightweight, so these retainer cases are very convenient to carry. The box is suitable for storing most fixtures, orthodontics, dentures, earplugs and other small objects.