We studied the human face to develop a special swimming goggle that fits most face shapes. One Mirror avoids the areas around the eye that interfere with the seal, and the mirrored lenses reduce glare and brightness so you can enjoy greater ease when swimming in well-lit pools or outdoors. Designed for fitness and recreational swimming, this model prevents fogging thanks to the anti-fog treatment on the lenses. Enjoy crystal-clear underwater vision with the wide polycarbonate lenses.