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Staying afloat even if you don't, these polarized Pepper's Sentinel Floater sunglasses won't sink in water if they fall off your face or the boat. Polarized lenses reduce 99% of visible glare from water, snow, sand and pavement for increased visual acuity and decreased eye strain. Triacetate lens construction sandwiches a polyvinyl acetate layer between 2 outer acetate layers. Lightweight, flexible TPX polymer frames resist impact and allow glasses to float on water. Matte black frames feature polarized brown-tinted lenses for 100% UV protection. Pepper's Sentinel Floater polarized sunglasses are designed to fit a large face.