Maui Jim Hema features MauiPure® LT which is Maui Jim's thinnest and most lightweight lens material. MauiPure LT delivers light-as-a-feather comfort that feels barely there. Hema is impact and scratch resistance, all while delivering the breathtaking views you expect from PolarizedPlus2 technology. The frames have been designed with performance in mind. Total weight of the frame and lenses is a mere 10 grams (1/3 of an ounce). The temple tip pads have been minimized, and the nose pads have been designed for advanced airflow technology to give you better grip and less slip. Feel the difference of MauiPure LT!