When a company brags about the durability of its product, one has to rough the things up a bit. Throw them as far and as high as you can; drop them on pavement; fold them, place them on a carpeted floor and stand on them; dump them loose into a backpack to suffer a month's worth of commuter churn. The OVVO Optics Phoenix sunglasses still look new.These sunglasses are composed of a steel-titanium composite that makes them incredibly light (less than an ounce), yet seemingly indestructible. The company claims the frames, when stretched out flat, can hold 90 pounds without breaking. They should stand up to the torture of most any trip. Expect to pay for the quality. They cost $289.