The Maxx StingRay is a light weight, matte finish,half frame design with form and function. It features inlaid rubber ear pieces to keep from moving and a floating 4-way adjustable rubber nose piece that creates a perfect fit for any size and shape face. Like every pair of 2018 Maxx HDSunglasses, the Maxx StingRay is made from TR90 and includes our lifetime warranty against frame breakage. The lenses are scratch proof and oleo-phobic (holds up against oils, grease, lotions, and sprays). High Definition lenses enhance contrast by reducing the scattered blue light that causes objects to appear flat against backgrounds. Contrast is improved so objects appear more sharply defined. Colors are bright and vibrant. Glare is virtually eliminated, allowing your eyes to relax and see everything remarkably crisp and clear. The HD lens cuts through haze and glare for optimum visual clarity, even at a distance. Sharpens contrast while maintaining a natural, no-distorted color balance.