Submited By: John Prosser on 07/06/2010
The special advantage of this mask is it is available with positive diopter tempered glass lenses for us older seadogs and the less common far sighted folks. The glass is much more forgiving of abrasion than plastic lenses like SeaVision. Manyplastic lenses have been ruined by the unaware polishing the lens with baking soda paste or toothpaste, which you MUST thoroughly do with new glass lenses. I bought, and always buy, the black silicone for better vision underwater because it blocks reflected light that would come through a clear skirt. IST has not been keeping their dealers stocked with positive diopter lenses. I was so happy to find Seavenger had some, as other dealers were backordered. IST Corona is a great mask at a great price! No leaks, even with my whiskery face and stray hairs. Buy it. Better yet, buy two- I did.
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