Lens for Scuba diving mask installed for Nearsighted Correction . Can be used for Diving or snorkeling mask. -7.0 Lens installed and ready for your next snorkeling or diving trip. Black Silicone Skirt with black frame. This is the strongest lens for those divers with heavy near sightedness. Only One at this price. New. close out. We do have many other masks in stock with readers or Corrective Lens' available