The Deep See Adventure Set Silicone Mask and Snorkel contains a top quality silicone Adventurer II Mask and a Dolphin Snorkel with purge valve. A great value in a quality starter set you will enjoy wearing in the pool or at the beach. The Adventurer II has a robust but lightweight frame with a high quality liquid injection silicon skirt and low volume two-tempered glass give a tight seal and great visibility and the Dolphin Snorkel with Purge Valve features an elliptical upper tube and corrugated flex section that is more streamlined than conventional snorkels.