Review on Convenient and Reliable Opti-Free Contact Lens Case - 1 Pack by Walter Hunter

This suitcase DOES NOT have an o-ring to prevent the tops from leaking. If you don't really tighten the tops (which makes them very difficult to remove in the morning) or just leave them on the vanity, they will leak very little. Therefore, they are not suitable for travel. Another major optical company whose name begins with the letter "B" makes a housing with an O-ring. Look for a sealed contact lens case at Revain and you will find it. The problem is that they are only sold in packs of 6!