Food-Grade Silicone Material&Comfortable: Snorkle Masks Full Face are made from soft transparent and food-grade silicone,without any peculiar smell,Soft 100% high-quality silicone rubber skirt for perfect seal on face,especially suitable for long-term use in diving, Kids Snorkel Mask can provide maximum comfort for a long periods of time. Newest Safety Breathing Systen:the kids full face snorkel mask has three separate air channels (Intermediate air intake, air outlet on both sides) which can effectively prevent the re-inhalation of exhaled CO2, thus ensuring that you inhale fresh air every time. When you snorkel, you won't feel dizzy or even suffocated by inhaling a mixture of air and CO2, hence maximizing safety. Anti-Fog 180 Panoramic View:This scuba mask features a single layer of tempered glass adopts one-piece frame design for a 180 clear view.At the same time Professional-grade Tempered Glass is resistant to breakage and water pressure impact, which can protect your eyes from various hard or sharp objects in the water and giving you hours of enjoyable swimming, diving, or snorkeling. Safty & Comfort & Easy Carry:The kids snorkeling set has an adjustable headband. You can easily adjust its size to fit kid's head comfortably.Foldable breathing tube makes swimming snorkeling mask to be more portable and space-saving.our snorkeling mask is your best choice!