Contact Lens Cases, with Screw Down Lids for hard, soft, and RGP contacts. Each case has individual lens wells with O-Ring seals to prevent leakage. Lens wells are ribbed to prevent contacts from sticking, and both wells and Lids are marked Right and Left. Use them as part of a value pack for your contact lens customers or display at the dispensing table. Western Ophthalmics offers excellent quantity discounts on this product!