The 509 Risers Sunglasses offer a timeless lock that's an instant classic. Like all 509 sunglasses, the Risers are inspired by our unique lifestyle. We go hard, get dirty, and demand sunglasses that can keep up. Featuring polarized Fusion 5 lenses and shockingly lightweight, comfortable, and tough TR90 Swiss thermoplastic frames, 509 sunglasses are simply built better. All styles backed by a fit guarantee and lifetime warranty.