Features of the Electric Stacker Polarized Sunglasses Frame: 6 base mold injected grilamid frame in feather weight construction with Performance grip nose bridge and temple tips Innovative double action hinge system Optics: 6 base melanin infused polycarbonate lenses 100% UV Protection Up to 98% blue light protection Direct flow hidden lens ventilation system, and removable eye mask for reduced exposure to wind and elements exposure Available in polarized polycarbonate lenses 99.9% Premium glAre reduction, relaxed/soothing eye feeling, True color perception, and scratch resistance Available in anti-reflection, hydrophobic, and oleophobic Performance lens coatings Includes microfiber cleaning bag