LENSES FOR SCUBA FULL FACE MASK - to use with Ocean Reef Lens Support 2 (not included). IMPROVED UNDERWATER VISION - Ocean Reef lenses for snorkeling make seeing underwater better and increase your diving safety. DIVING MASK COMPATIBILITY - Lens fits all Ocean Reef Full Face Masks including: Aria Snorkeling Mask, Ocean Reef Neptune II Full Face Mask, Ocean Reef Neptune Space G Full Face Mask. DURABLE MATERIALS - Ocean Reef Lens is made of durable plastic to ensure safety and comfort while diving; each lens is packaged separately to offer you the chance to create the perfect prescription. LENS SPECIFICATIONS: width: 8.50; depth: 9.00; height: 1.70.