All Gill sunglasses are floatable, so if you drop them, all is not lost. They have been designed with integral flotation and feature UV protective and 100% glare free polarized lenses specifically designed for use on the water. Floating 100% glare-free polarized lenses by Polaroid Frames are manufactured from Grilamid TR90 a light, tough and flexible cutting edge material Wrap around styling for maximum protection Excellent UV protection Lightweight, shatterproof and scratch resistant lenses