The quality of the assembly and of the materials is the same as the most technical range: sturdy tempered glass, polycarbonate frame of reduced thickness and weight, simple and resistant buckles integrated into the frame and in the front-side, silicone strap. Its design is studied to obtain a very wide vision in all directions. Buckles 100% swiveling in all directions thanks to the flexible anchorage, and micro-adjustment with one hand at the push of a button. They avoid the usual breakage of this critical point and maintain the stability of the mask, once positioned and with the strap on