Mares Ergo Dry Snorkel The Mares Ergo Dry Snorkel is engineered with a patented dry top and ergonomically correct curved mouthpiece, making it one of the most comfortable snorkels on the market today. This Mares snorkel is designed for prolonged snorkeling sessions, the Mares Ergo Dry Snorkel's combination of the 100% dry top and exhaust valve in the mouthpiece ensures totally dry breathing, while the one-way purge valve allows for effortless clearing. Features: Anatomical design Exhaust valve Corrugated hose - silicone. Silicone - ergonomically correct curved mouthpiece. Dry top Adjustable mask clip