Ray Ban Tech RB4195 Liteforce Wayfarer 601788 Sunglasses Ray Ban innovates again! Ray Ban Tech's 4195 from the Liteforce collection showcases extremely lightweight materials that offer superior comfort and style. These modern sunglasses in 601788 matte silver with grey mirror gradient lenses feature the classic wayfarer style and superb color combinations. Ray Ban innovates again! Ray Ban Tech's 4195 from the Liteforce collection showcases extremely lightweight materials that offer superior comfort and style. These modern sunglasses in 601788 matte silver with grey mirror gradient lenses feature the classic wayfarer style and superb color combinations.