For Travel: The contact boxes are prefect in size and do not take up a lot of room, which are portable and very easy to carry with. Case Size: 2.17*2.4*0.63 inch /5.5*6.1*1.6cm Package includes: 4 * Contact Lens Boxes with Blue, Purple, Rose Red, Green colors Ideal For Back Up: You can use these cute little contact cases as a back up to have in your purse or at your office ect. They are the ideal size for your desk drawer, laptop bag and/or purse. It is helpful and make keeping a set of contacts in several places more convenient. Compact Case: Each contact case has a mirror to help with inserting contact lens and the tweezer is really handy when one of the lenses bunched up in your eyelid. This case can hold extra solution in a little bottle that does not leak and the whole thing in one case fits in your pocket or purse.