Cycling Glasses Interchangeable Lenses Monton Switchable Cycling sunglasses offer maximum coverage and an ergonomic design for greater comfort while riding. This innovative design offers riders the opportunity to switch between half-frame and full frame glasses depending which frame coverage and appearance is preferred. The Polycarbonate lenses offer high definition, more natural coloration, and unmatched clarity. TR90 frames provide adjustable nose pads for a firm fit regardless of face shape, and the cushioned nose pads ensure the glasses stay put on rougher terrain. Features:- Switchable frame allows the rider to choose the field of view and ventilation- Durable, flexible and lightweight TR90 frame- Arc legs fit the ear contour closely- Scratch-resistant polycarbonate lens is thinner than regular plastic, and offers 100% UV protection- Hard case for storage- Soft case provided in Monton fashion print; jersey fabric suitable for cleaning the lenses- Comes with a frame bracket that allows riders with prescription lens requirements to attach their own lenses to the sunglasses Lens protection from both UVB and UVA rays.