REFUGE is part of our Leviathan Series. RCI Optics lens technology utilizes the proprietary Helius™ advanced polymer, up to six times denser than polycarbonate or other lens materials. Our Leviathan Series™ sunglasses, made with the Ballista 2.0 frame material and coupled with our Helius H780 or L25 lenses, pass both ANSI Z87-1 and MIL-STD 662 ballistics fragmentation tests.