Breathe through your nose while snorkeling. Goodbye jaw discomfort (no uncomfortable mouthpiece to bite onto). Goodbye difficult breathing and goodbye water in your snorkel thanks to our dry snorkel. For good. Huge field of vision and no more fogging thanks to our patented and independently tested air circulation technology.TUSA Sport Full-Face Snorkeling Mask has a uniquely designed orinasal for optimal sealing around your nose. All our tests are conducted in water and with actual use in mind.