【Upgrated Safety Breathing System】We focus on the safety of adults and kids snorkeling. Jwintee Full Face Snorkel Mask features 3 completely separate air channels--Intermediate air intake, Exclusive two exhaust channels on both sides. To make exhalation and inhalation have completely isolated to prevent the mixing of exhaust gas and fresh air. The side breathing apparatus allows for exhaling that relieves pressure in the mask when diving. 【Amazing Anti-Fog & Anti-Leak Technology】 The full face snorkel mask with advanced leak-proof silicone sealing and floating ball prevents water from entering in mask. Separate inhaling and exhaling channels stop the top snorkel mask from fogging up and the heat air is not easy to condense on the mirror surface. 【180° Crystal Clear Panoramic View】This full face snorkel mask kids is designed with a natural curved, which perfectly fit children face. Seaview 180 degree panoramic design that allows for the ultimate in comfort and visibility! 【Food-Grade Safety Silicone Skirt】 The snorkel mask wrapped by soft and safe silicone is fit for highly allergic person either. It seals the face very well, has good airtightness, and does not leak water, and the adjustable strap helps you to adjust it comfortably, which is suitable for most kinds of faces. 【Perfect Gift To Kids】It's time for your kids to head on an undersea adventure with the help of snorkeling masks.This kids snorkel masks are easier to use than traditional diving mask, It is extremely suitable for beginners and children, even for inexperienced swimmers. 【Upgrated Safety Breathing System】We focus on the safety of adults and kids snorkeling. Jwintee Full Face Snorkel Mask features 3 completely separate air channels--Intermediate air intake, Exclusive two exhaust channels on both sides. To make exhalation and inhalation have completely isolated to prevent the mixing of exhaust gas and fresh air. The side breathing apparatus allows for exhaling that relieves pressure in the mask when diving.