Field & Stream Ranger Shooting Glasses System by Randolph Engineering starts with a high-quality, lightweight alloy frame, featuring dual-action spring temples and nonslip silicone nose pads. The key to the system is 10 interchangeable 2.5 mm polycarbonate lenses in gray, clear, yellow, brown, orange, vermilion, light purple, pale yellow, sunset orange, and Ranger bronze. Cases included for frames and each set of lenses. About $240; call 800-541-1405.