Built for hard-core fisherman, the Drop back features a vented frame to maximize airflow and reduce fogging, and a soft finish for style and comfort. The Drop Back's light weight frame also has recessed nose pads, and co-injected temple padding for a non-slip fit, so they stay put when the action strikes. Scratch resistant polarized lenses block glare and 100% of harmful UV rays, sharpen optics, reduce eye strain, and help anglers see below the water's surface to spot fish and improve navigation.