The Hydro-Pro Flowtech Full-Face Snorkeling Mask is the most efficient full-face air flow system. It's perfect for all your favorite water adventures, including snorkeling, swimming laps and exploring the open water. , , Dual Air Flow Technology: This innovative, next-generation mask and snorkel design enables you to breathe naturally through your nose and mouth while in the water. The dual air flow technology was designed for air to flow in and out of the mask through two snorkel openings, ensuring fresh air with each breath. , , Full Dry Top Technology: The advanced dry top snorkel technology prevents water from getting into the mask when it is submerged. There's a small flotation device that seals off the top of the snorkel, so you can dive down under the water without fear of getting water into the breathing area., , Comfortable Fit: The soft, silicone full-face structure sits comfortably, while also allowing you to plug your nose to equalize pressure without the hassle of removing the mask., , For your next snorkeling adventure, be sure to bring along the Hydro-Pro Flowtech Full-Face Snorkeling Mask.