Dragon first brought you frameless technology with the APX model. The NFX model and its slightly smaller NFXS kid brother offer you a continuation of frameless but with new edges.
Its a dual Lexan cylindrical design with their infinity lens technology providing you with serious peripheral vision at all times and offers really simple really swift lens change system. The armored frame ventilation provides you with great circulation and together with the anti-fog coating you've got few worries on the fog front.
Designed for a larger fit, the Dragon NFX is fast becoming a legend in its cylindrical body.