DESC: Costa Del Mar Sunglasses Harpoon - Large Fit. TR90 nylon provides the strength and flexibility to survive the daily grind. Well suited for sport or casual use in hot or cold temperatures. Spring Hinges. 8 base polarized lenses offer exceptional optical resolution. Premium glare absorbing anti-reflective coating. Water-repellent coating sheds water, snow and even saltwater. 100% UV Protection. LIFETIME Warranty.