The Cressi Skylight Swim Mask is an innovative new swim mask that offers the wearer unparalleled comfort and vision. A soft silicone skirt and strap ensures a comfortable and secure fit. While the micrometric adjustment strap and buckles allow you a precision fit. The lenses are strong polycarbonate plastic and have an anti-fog and anti-scratch, treatment with 100% UV protection from the sun's harmful rays. The deliver extra wide vision and is the best open ocean swim goggle on the market. Swim Mask comes with a reusable protective box.