The lenses are IMPROVED and upgraded from traditional plastic lenses to super utility high performance polarized lenses. WOCACHI promises to provide our customers with professional high quality products and friendly customer service. We are responsible for each product sold by us. Quality assurance is provided by us, and your benefits are protected. Occasions: Cycling Bicycle, Driving, Running, Fishing,Racing, beach, sea,Skiing and Climbing, Trekking Or Other Outdoor Activities.