Oceanic Shadow MaskThe Shadow mask lives up to it's name by incorporating a sleek, black, 100% liquid silicone skirt attached directly to the tempered glass. This low volume skirt works in conjunction with swiveling, easy adjusting buckles to provide ultra comfortable adjustment and fit. Because it has no plastic mask frame, the Shadow packs flat and takes up very little space during travel or transportation. It can also perform an additional use of being a "back up"