Single-lens dive mask 4.5DD

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Maximize your precious time underwater! You plan your dives weeks in advance, but after hours of gear prep your actual time underwater ends quickly. For the first time in history, divers can now enjoy 100% natural vision while underwater. Even divers with decades of experience are amazed when they try their own A-to-B comparison with our patented Double-Dome mask and see how much they have been missing. Keeping track of your buddy and navigating is much easier when you have superior situational awareness. Diving is 5X more fun! A radical solution for superior vision. The HydroOptix MEGA 4.5 DD is the world's only mask that puts your eyes at the center of a dome. This geometry lets you see objects at their TRUE size, distance and shape. However, the concave shape of water creates a secondary optical phenomenon: you must be nearsighted to use the mask.