Maui Jim Onshore Sunglasses are made with a rectangular frame for full coverage on your blazing trails and in your fishing stomping grounds. The frames of these sunglasses are very comfortable as they are made with lightweight nylon material. Shape: Classic rectangular frame for a retro look and works best with oval, oblong, or square faces. Bridge: Saddle-style fixed bridge with embedded rubber nose padsFit: (eye) 58, (bridge) 18, (temple) 145 8-base curveMaterial: Lightweight nylonHinge: Spring hingeSuperThin Glass lenses: Provides the most crispness of any optics available, and are 20% thinner and lighter than standard glass and offer the ultimate scratch and solvent resistance.