Both designs feature a dual-seal cap to prevent leakage and a reinforced hinge to reduce tearing. The primary difference lies in the interior design of the wells:
Ribbed Well Flat Packs: These have a raised star pattern at the bottom of the well, facilitating easier removal of contact lenses. They are available in eight solid colors or a mix of all eight colors. This design is the most popular choice among customers.
Smooth Well Flat Packs: Featuring a smooth, even well, these are available in three solid colors or a mix of all three colors.
There is no price difference between the Ribbed Well and Smooth Well Flat Packs.