TUSA SP-170 Platina Hyperdry II Scuba Diving Snorkel Hyperdry system with three current rectifying plates High flow and angled purge valve to eliminate gurgling of water and allow bubbles to pass by the face when purged Ortho-consciously designed mouthpiece for ultimate comfort Crystal silicone flexible neck Detachable two-section swivel adapter for free movement Three-dimensional pipe curve for the ideal angle for snorkeling