Description The Ocean Design Opti Mask is the perfect low-cost alternative for divers who need corrective lenses while diving. Instead of replacing the mask lenses, the Opti Mask is compatible with negative dioptre or bifocal lenses that simply snap onto each side of the mask. Features: 2-window design for a sleek aesthetic and an expansive field of view. Accommodates small to large adult faces. Innovative snap-on feature accepts both negative dioptre and bifocal corrective lenses, eliminating the need for costly lens replacements Corrective Lenses (sold separately): Negative: -2.0 to -6.0, step 0.5 Bifocal: 1.5 to 3.5, step 0.5
