The frame comes with a tough regular fit with special design qualities which are all about keeping the glasses on your face, comfortably, while allowing you to remain active. The nose and temple pads are both coated in a, specially adapted, rubber that is resistant to moisture to keep the glasses firmly on your face even when conditions become moist. The nose and ear pads are also fully adaptable so that you can ensure a tight comfortable fit dependent on your face shape.The Photochromic lens included with these glasses is a specially designed lens that gives you the best in vision quality in various different lighting conditions. The lens helps add extra layers of definition for improved optics and a level of clarity that will keep you ahead of the game. The lenses are 2mm thick to also give you a protective layer that shields you from high impact.