AQA KM-1301 Snorkeling Mask Boubo Duo Optical Lens Swimming Underwater Accessories ¥5,500 For Myopia S-1.00 to S-8.00 (0.5 increments) For both left and right eyes Integrated tempered glass "To everyone who loves the sea" KINUGAWA, the "AQA" brand that provides snorkeling products Replacement lenses for myopia and astigmatism These are replacement lenses for myopia for the "Duo Soft II" mask that supports prescription lenses. The higher the number on the lens, the stronger the prescription. New and unopened, selling because I got a different one.