Four crystals with an angle of vision in all directions without precedents. The lateral panels have been realized in polycarbonate anti-impact curled. Though the visibility targets of a mask it depends on the frontal zone, the lateral panels increase the luminosity and the field sensation and allows an "intuitive" vision of what happens in the lateral zones, adding approximately 10 º of field. Frame of minimal thickness (6 mm) that lightens notably the weight of the mask to only 195 g with included strip. Radial assembly that does not need of a fence to fix the crystals that the thickness of the mask increases, but it is the own principal framework the one that the facial one surrounds and presses like clasper on the crystals assembling the mask. Small structure of the frame and surrounding facial that allow a great approximation of the crystals the eyes without problems of contact with the frame. Sloping crystals 15 º and prolonged over the cheekbones to increase the low visibility more than 30 % with regard to that of a traditional mask. The top visibility increases up to the limit that allows the own thickness of the frame (total visibility-5 %) and the lateral visibility is equally comparable to the vision without mask. Great structural inflexibility of the central bridge to avoid the loss of the plane of the crystals due to a tension excess of the strip that might provoke optical distortions. Top and lateral zones of the frame with attractive insertions in thermoplastic rubber proved from the injection at the same time of two different materials by means of a very advanced technology that up to today was in use only in components of high technology as the keys of the mobile phones. PENTA incorporates a new system of clasps together with the frame and they are orientated in the suitable sense of direction of the tension of the strip. The clasp remains, therefore, very protected from possible blows. Only it puts out on the outside the pusher that allows one very precise regulation of the tension. Strap totally re-designed, with a more wide zone of support and at the same time flexible but resistant. Excellent mask of high range for diving and snorkeling.
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