The Explorer is a casual design that incorporates high performance features for those times when you want both protection and style in your life. With the same lens and frame construction and materials as the Terrain and the Summit, the Explorer provides extreme impact resistance, durability, and flexibility in a more lightweight package you can wear everywhere. Features of Magpul Industries Explorer Sunglasses w/Polycarbonate Lens: Constructed of TR90NZZ the frames combine lightweight construction and ballistic protection providing rugged strength and flexibility with maximum overall coverage Rated to Z87.1 ballistic impact protection Oleophobic treatment of lenses provides liquid and other chemical protection and added scratch resistance Anti-reflective coating on inside of lenses minimizes distracting reflections Available with polarized and non-polarized lenses Casual style includes a more relaxed wrap and more flexibility at the temples for long-term usage Padded low profile temples integrate smoothly under helmets communication headsets and over the ear hearing protection Coated stainless steel pins provide simple but dependable hinge functionality Rubber nose and temple pads are over molded to the frame for durability