Cocoons Polarized Clip-On Sunglasses with scratch-resistant, polarized Polaré® lenses are the preferred choice of outdoor enthusiasts who wear prescription eyeglasses, eliminating harsh glare and filtering out damaging UV light. Gray tint optimizes natural color definition, while amber tint sharpens visual acuity, improving depth perception and contrast in variable light conditions. Gunmetal frames are available in a variety of shapes and sizes to fit almost any pair of glasses. The patented FreeFlow™ stainless steel spring bridge enables wearers to effortlessly attach the clip to their prescription frame. All Cocoons Clip-Ons include a slim protective hard case. Manufacturer lifetime frame warranty.