TYR's new Corrective Optical is a distinctive "step diopter" goggle in spherical prescription lens options. It features a universal eye socket frame design for superior fit. Wide angle, optical grade polycarbonate lenses in corrective diopters (-2.0 through -8.0) Comfortable Thermal Plastic Rubber gaskets provide both comfort and leak-proof fit Durable, split TPR head strap provides a comfortable yet secure fit Easy adjust snap lock side clips One size fits all