These Caribbean Sun Destin Polarized Sunglasses feature Monel frames, handmade Zyl tips, spring-hinge temples, silicone nose pads, and a proprietary polarized lens. Caribbean Sun's Intelligent Lens Technology selectively filters out the "bad" light allowing the "good" informational light to reach your eyes, creating the cleanest and clearest view of the world around you. These aviator style sunglasses are made of metal material and are built for pristine beaches, crystal clear waters and bright sunny weather. A 100-percent ultraviolet filter protects from the sun's damaging rays and a pure PVA polarizing filter absorbs up to 99.9 percent of reflected glare. Single-vision prescription lenses are available on select styles and a custom hard case and micro-fiber cleaning cloth is included with each Caribbean Sun frame. These Caribbean Sun Destin Polarized Sunglasses are lightweight and sit comfortably on your face allowing you to sit back and take it all in.