The Ocean Design Opti Mask is a unique, low cost alternative to traditional corrective lens masks. Instead of replacing the clear/plano mask lenses, negative dioptre or bifocal corrective lenses snap-on to each side of the mask.
Great for Scuba Diving and Snorkelling. Fits Small to Large Adult Faces
Ocean Design Opti Mask Features:
2-window design for sharp looks and maximum field of view
Fits small to large adult faces
Accepts negative and bifocal snap-on corrective lenses
Negative: -2.0 to -6.0, step 0.5
Bifocal: +1.5 to +3.5, step 0.5