TUSA Powerview Adult Dry ComboPowerview Adult Dry Combo The Powerview dry combo includes a high quality 2 window mask with enhanced vision, EZ adjust buckle technology, ClearVu tempered glass lens and pure silicone skirt and strap. The dry snorkel features TUSA Hyperdry Elite dry top technology (pat p) that stops water from entering into the snorkel, a drain chamber and purge valve for easy clearing and pure silicone swivel and mouthpiece. UM 24 Mask Pure Silicone Skirt and Strap