The Tempest multifunctional glasses are designed for military use. The frame is made of black polymer and can be used with both double arms and the included elastic band for better fit. It includes a special removable protective mask for use in sandy or dusty situations. The lenses are high-resistance polycarbonate with a thickness of 2 mm. The glasses come with three interchangeable lenses of different colors: clear, gray, and yellow, depending on the needs. They are equipped with a hard case with total zipper opening. Gross weight: 194 grams.