Dirty Dog Ecco Polarised SunglassesThese Dirty Dog sunglasses are ergonomically designed to be superior in comfort and fit in high performance sporting conditions. Rubber nose pads and temple tips for a non slip sunglass that will stay on when the heat is on. The sunglasses are specially vented eliminating fog and moisture which can cloud your vision. Super light weight TR90 frames with 100% memory add to the performance and comfort of these sunglasses. The frames are extremely durable coupled with shatterproof polycarbonate lenses for the ultimate sporting sunglass. Don't just reach your potential. SURPASS it!Features: Lens Material: Polarized polyfilter shatterproof polycarbonate lenses Frame Material: Super light weight TR90 frames with 100% memory UV Protection: 4 UV filters for optimum UV blockage Scratch Resistant: Treated with two specially developed hard coatings to make the lenses extremely scratch resistant and prevent the deterioration of lens clarityTechnologies: Polycarbonate: The most impact resistant optical material available, guaranteeing the wearer protection from physical objects as well as visual comfort. Scientifically formulated to offer exceptional defence against the suns harmful rays. Polarized Polyfilter: Absorbs radiation that can be damaging to the human eye. These lenses provide clear and restful vision in the most extreme environmental conditions. Dirty Dog Polarized lenses also block reflected horizontal glare making them the perfect choice for any high glare situations like fishing, boating, skiing, driving or any situation where you need extra protection from reflected glare. TR 90: Grilamide TR90 is a thermoplastic polyamide which is lightweight, extremely flexible yet super strong with 100% memory allowing the frames to bounce back to their original shape. It has demonstrated no risk of allergy and is FDA and CE approved Buy from Chain Reaction Cycles, the World's largest Online Bike Store.