This Cressi Calibro Mask has a tapered structure deriving directly from the highly popular Nano-mask patent. The dual integrated frame technology system allows you to join the silicone skirt to the lens frame without major interruptions of the curvature continuity. The result is a mask with an extremely hydrodynamic shape and, visibility being equal, a significantly smaller size. Mask features inclined and inverted tear-drop lenses for improve downward visibility, a Cressi's patented design (US 6272693). The field of view obtained is particularly wide, laterally and in the lower zone. The skirt, in the front part, has a structural silicone insert which increases the sealing ability of the mask and creates an exceptionally pleasant chromatic play. Easy-to-use buckles for quickly strap length adjustment.Mask is a low volume tempered glass 2-window mask design with a double feathered edge silicone skirt. The wide split strap is equipped with easy-to-adjust buckles. The skirt and split strap combined for a perfect fit on the face. The mask lenses are made from tempered glass. Mask has an easy-to-reach nose pocket for ear equalization. The Calibro mask is available in multiple colors, is made in Italy and comes with a protective mask box.