William Painter - The Lume Titanium Polarized Sunglasses 100% lifetime Money back guarantee plus free returns. Stylish & high quality sunglasses made with aerospace grade titanium. World's lightest nylon polarized lenses with scratch resistant and 100% UVA /UVB ray protection. Includes a FREE protective hard case and cleaning cloth. Incredible value for lifelong durability, backed by a guarantee. Note that the guarantee policy only applies to products sold by William Painter and not any other reseller.