Whether onshore of offshore, the latest polarized rectangular sunglasses by Maui Jim offers complete coverage in a comfortable nylon frame. The larger frame size and spring hinges will accommodate larger face sizes, and the SuperThin Glass lenses will offer the crispest optics while angling for your catch of the day. Subtlely wrapped to offer a bit more protection, Onshore is the perfect match for long days on the water. Lens Material: SuperThin Glass - Provides the absolute crispest optics available. 20% to 32% thinner and lighter than standard glass, it offers the best scratch and solvent resistance.