The Cressi Supernova Dry Diving Snorkel with Splash Guard and Top Valve is 1 of the best dry snorkels available in the market. It has a unique splash guard at the top which greatly reduces the entrance of water during use on the surface. The special valve on top seals the tube as you dive, almost totally preventing the entrance of water when the snorkel is submerged. The end part has a corrugated piece that's smooth on the inner side and keeps the snorkel away from the mouth during use when scuba diving. A special water collection well, with a large elliptic valve, allows quick and easy water expulsion. The replaceable, angled mouthpiece and corrugated tube section are made from hypoallergenic silicone for extra comfort and function. A quick-release snorkel keeper and ergonomically contoured shape make this Cressi snorkel an outstanding choice. Mfrs. 2-year limited warranty. Top splash guard to reduce water entry during surface use Top valve seals during dives to inhibit water ingress Corrugated end piece keeps snorkel away from mouth during scuba diving Water collection well with large elliptic valve: easy water expulsion Replaceable, angled mouthpiece and corrugated tube section Quick-release snorkel keeper Ergonomically contoured shape