The result of innovative materials and a "function first" focus, Hard Kore Sunglasses by Kaenon provide the ultimate performance product for today’s athlete and sports enthusiast. A testament to the company’s commitment to Luxury Performance design and engineering, Hard Kore is the next evolution of the brand’s award-winning Kore model. This fresh design is lightweight, incredibly durable, and intuitively integrates with the natural form of the wearer’s head shape while accomodating different facial features. Designed for men and women, Hard Kore is offered in two lens shape options – Regular lens shape for smaller faces or high cheek bone structures; and Large lens shape is approximately 2 millimeters wider and deeper than the Regular Hard Kore lens shape - for larger faces and greater protection from the elements. Of course, Hard Kore utilizes the Kaenon SR-91 lens material in 8.25 base curve for maximum wrap and unprecedented optical superiority. The SR-91 lenses encapsulate our proprietary Glare 86 Polarizing element in multiple, purpose-built lens tints, and varying Light Transmission Level (LTL) options. Constructed of TR-90 the frame incorporates Variflex™ rubber temple tips and nose pads ergonomically engineered for maximum comfort and security. Hard Kore is sold with an XL Metal Case. And, like all Kaenon Polarized eyewear, Hard Kore is Rx adaptable utilizing SR-91 Rx lenses.