This mask features a unique taper design with the Dual Integrated Frame Technology System that can join the silicone skirt to the lens frame without major disruptions of the curvature continuity. As a result, the scuba diving mask has a rubberized outer frame to prevent slippery & has an incredibly hydrodynamic structure giving more visibility. This snorkel diving mask is perfect for diving & snorkeling. The acquired field of eyesight of this scuba diving product is especially large laterally and in the lower zone. The front half of the skirt encompasses a structural silicone insert that improves the sealing performance of the scuba diving mask and offers a very pleasing chromatic play also has swiveline quick adjust buckle.