The M2001S Paragon professional divers mask offers TUSA’s NEW Reinforced TRI-MIX frame and Freedom Technology with Fit II Freedom model diving masks feature a dimpled skirt surface with varied silicone thicknesses and stability ridges in addition to a proprietary low-friction skirt surface on the fitting line. Ultimate clarity and UV protection. Polyurethane (PuRiMaX) material bumper protection and a cross-beam metal frame structure combined with the superior toughness of the polycarbonate frame bolted together to create a seriously tough diving mask. Easy Drain - It is in the form of a skirt that makes it easy to drain water when clearing