U.S. Divers Dryview Full-Face Snorkeling Mask, Black L/LX Durable shatter-resistant polycarbonate lens Silicone mask skirt provides excellent comfort and fit Removable snorkel for better transport Distortion-free viewing window with flat profile and 180-degree field of view Sizes: Measure from the bottom of the chin to between the eyebrows. If less than 5 inches please purchase a medium. If above 5 inches please purchase L/XL Includes a Black Full-Face Snorkeling Mask Size L/XL The Dryview full-face snorkeling mask will change the way you snorkel forever. No longer will you need to bite down on an uncomfortable mouthpiece. The exhaust technology separates breathable air from exhaled air for an easy and comfortable snorkeling experience. The antifog-treated lens offers a 180-degree vision for amazing underwater views. Always be in control with the quick release, easily adjustable silicone straps, and soft silicone face skirt which provides a comfortable seal that keeps water out of the mask. Don?t worry about waves because the submersible dry top snorkel and purge valve keeps water out of the mask above and below the surface of the water. This full-face mask is perfect for travel. The Dryview mask comes with a detachable snorkel for easy storage. Join the crowd and experience snorkeling in a new light ? with wide panoramic clear views and an easy breathing experience.