A snorkel mask enables unrestricted breathing through the lips and nose. There is no need to change any accessories because it is so simple to assemble and the breathing tube won't come off. You can conveniently pack and transport the detachable air tube in your bag. The dual air-flow system makes it more anti-leak and anti-fog! makes it simpler than ever to breathe comfortably while snorkeling through your mouth or nose. gives you unrestricted viewing enjoyment. For you, reinvent snorkeling!