<b>WANFEI Full Face Snorkel Masks Dive Mask Underwater Snorkeling Mask Sets for Kids and Adults 180° Panoramic View Anti-fog Anti-leak Snorkel Masks</b><br><br> <b>Features</b><br> <b>Floating Ball Design:</b> The floating ball goes down to release the gas hole for air inhale and goes up to prevent water from entering into the mask to avoid water choking.<br> <b>Detachable Dry Top Tube:</b> Easy to carry, install and detach! Wider and longer inhale tube provides more fresh air for safer and smoother air exchange.<br> <b>Action Camera Mount:</b> Includes a screw to mount your action camera to capture your amazing underseas moment.<br> <b>Wide 180 Degree Panoramic View:</b> Transparent anti-vertigo beveled lens and panoramic view of 180 degree gives you a clearer and wider view of the ocean world.<br> <b>Medical Grade Silicone:</b> Non-toxic and Environmental.<br><br> <b>Size Guide</b><br> <b>Measure the distance from the bridge of your nose to the bottom of your chin:</b><br> If the distance is less than or equals to 5.5in (14cm), please choose S/M;<br> If the distance is more than 5.5in (14cm), please choose L/XL;<br><br> <b>Warranty:</b><br> If you have any question or advice about WANFEI Full Face Snorkel Mask, please feel free to contact us. We always strive for 100% customer satisfaction and will exert ourselves to fix your issues.<br>