The glare-reducing, contrast-enhancing polarized polycarbonate lenses make these sunglasses ideal for use around water and other high-glare environments. Durable, injection-molded Grilamid TR90 plastic lens frame combine with metal bows that have extended pads on the end tips for greater comfort. UVA and UVB protection. Black frames have gray tint lenses; Tortoise frames have brown tint lenses.