TUSA SPORT UC3125 Mask and Snorkel Set ADULT Black SeriesTUSA SPORT UC3125 Visio Tri Ex Adult Mask and Snorkel Set includes the UM31 Visio Tri Ex mask and the USP250 snorkel. The UM31 Visio Tri Ex mask is a revolutionary 3 window design that offers an ultra wide 168 panoramic view. The USP250 dry snorkel features TUSA Hyperdry Elite dry top technology that stops water from entering into the snorkel, drain chamber and purge valve for easy clearing, and hypoallergenic crystal silicone swivel and mouthpiece.