The aggressive Kazbek has a flexible and durable black frame is equipped with soft TPR nose pads and temple arms to create a comfortable, nonslip fit. The addition of a polarizing lens filter increases clarity by reducing glare. Edge Eyewear is ANSI Z87.1+2010 and Military Ballistic MCEPS GL-PD 10-12 compliant and all lenses block 99.9% of UV radiation.