Preparation:Make sure there is no sand on the mask or tube, if there has sand,using water to clear the breathing tube or mask,once the mask is clean then it ready for use.Checking the seal:Pull the straps of the mask over your head and check the fit of the mask on your face,breath normally to check for any leaks,if you feel slight pressure change when you breath,then you have a good seal,if not ,please kindly adjust the mask wire size.Using:Once in the water,swim on the surface and breathe calmly through your mouth or nose,if you feel light headed remove the mask immediately, keeping your chin slightly up will create the best breathing experience, if you feel any obstruction to your breathing, it may be due to the snorkel being covered in water temporarily , the dry top snorkel design will prevent water from entering through the top of the snorkel , if water leaks into your mask,simply lift your head out of the water and it will drain out of the chin valve,no need emove your mask to clear it of water.Dear customers:WSTOO thanks for your supports very much. We are improving WSTOO products based on the feedback of the customers after using WSTOO. Many customers were not satisfied with the WSTOO snorkeling mask we sold before and offered many valuable advice and suggestions to improve this product. Based on the problems found by the customers, we have comprehensively updated WSTOO snorkeling mask and have solved problems such as the snorkel was difficulty to install and easily fell off while snorkeling, it was inconvenient to replace the accessories, and fog or leakage appeared in some snorkeling masks. Therefore, the functions and quality are guaranteed.WSTOO guarantees: If you are not satisfied with our product, we will offer you 100% refund.Warranty principle of WSTOO: If there is any quality problem within 90 days after you buy this product, we will replace the product with a new one for free.
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