The Phantom Aquatics Dry Top Flex Snorkel's Streamline Oval-Shaped Bored Tube and Lower Flex Tube combined to make this Snorkel perfect for Scuba. The Lower Section Flex Tube Automatically-Swings Out-of-the-Way when you are using your Scuba Regulator. Snorkel has a Dry Top that virtually eliminates Water Intake through the Top of the Tube and Seals the Tube while Underwater. Swim through Wind and Wave Spray without interrupting you breathing. If any Water enters the Snorkel Tube it can easily be Blown-Out with the Easy Purge Systems One-Way Valve with Extra-Large Self-Draining Chamber at the Bottom of the Snorkel Tube. The Angled Mouthpiece fits Comfortable in the Mouth for hours of Snorkeling Fun and is Removable if Replacement is necessary. The Snorkel is also equipped with a Quick-Release Buckle which Detaches with a Single-Hand Action.