Hello Muslum, Thank you for your inquiry! Clearing the Ocean Reef Neptune Space G.divers Full Face SCUBA Dive Mask is very easy. The FFM comes with 3 sets or “Nose Plugs”, allowing you to find the proper fit to close (or seal),off your nostrils. To close off your nostrils to clear, the diver pushes up on the base of the FFM. When the plugs close off the nostrils, you then clear your ears as if you were pinching you nose using a regular mask.
http://www.scuba.com/scuba-gear-124/029944/Ocean-Reef-Neptune-Space-G.divers-Full-Face-Scuba-Dive-Mask-with-Diver-Communication-Unit.html If you have any questions or wish to place an order, please call us at 1-800-247-2822.
FULL MANUFACTURER’S WARRANTY 
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