Contact Lens Case Features R for right eye and L for left eye! I use Bioclen ONE disinfecting solution, so I end up with a lot of these cases! I have a dedicated case because I use an automatic cleaning machine... haha So, these are for someone who can use them! By the way, I'll probably have more in the future, so please comment how many you need when you purchase, and I'll accommodate you! Although it's new and unused, it's been stored at home by a regular person, so please understand that it's "used" in a sense. Thank you! Thank you for looking.