Manufacturer Fourth Element
The Fourth Element Dry Snorkel is a snorkel with an articulated valve at the top and one-way purge valve at the bottom to keep the airway clear from water. The top of the snorkel has a splash guard that helps to deflect waves from splashing over the top and a small float inside so that when submerged, it floats up and blocks the top of the snorkel so that water can't get in.
The lower section has a small water trap that collects any water that does find its way into the snorkel and keeps it away from your mouthpiece and you can still breath around it. A one-way valve pushes any water out of the bottom of the snorkel every time you exhale which is much easier than having to clear the entire snorkel.