MATERIAL: Those contact lens cases are made of plastic. The Smooth surface of this contact lens container also can prevents damage to your contact lenses. USEFUL AND PORTABLE: These contact cases are in small and portable size which is easy for you to carry around in your daily life, its size also allows you to put it into your purse or in your pocket. ASSORTED COLORS: These contact lens cases come in variety colors, each package comes with three colors, you can use different colors to differentiate your box with your friends and family ,in the same way you can also use different cases for multiple lens for your own. EASY TO USE : Our contact lens cases lids top is easy to open or close, Each case has a clear "L" or "R" mark on the lid to differentiate left and right, you can also distinguish left and right with different color of the lid. Daily care: Please clean the contact lens case before use at each time. It is recommended to change the contact lens case once a month.