wanfei snorkel mask,comfortable full face snorkel masks sets for kids and adults upgraded breathing system diving mask 180° panoramic view anti-fog anti-leak snorkel masks wanfei <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>