Flying Fisherman Action Angler SpringLock Small Oval Shape Clip-Ons, Gunmetal Smoke/Blue Mirror Lenses Polarized Triacetate Lenses Eliminate Glare and Reduce Eye Fatigue Springlock System Holds Tightly to Prescription Eyewear for Snug Fit AcuTint Lens Coloring System Adds Color Contrast Without Distorting Natural Colors, Allowing You To See More Clearly 100-Percent Protection From Harmful UVA and UVB Rays, Lightweight and Durable Limited Lifetime Warranty