Tracker Clear Platinium extremely comfortable and specialized - this is the best description of this model of Bolle glasses. The Tracker model provides protection against all mechanical damage, as well as against chemicals, which makes these glasses unique from other protective glasses. Contrary to other models, in addition to the mechanical strength of class F and thermal resistance of class T, this model additionally has: chemical resistance class 3 (protection against liquid jets) and 4 (protection against sprayed liquid), mechanical strength class B (object, with which a direct collision takes place, must not exceed 86 g in weight and 120 m / s traveling speed), and also meets the requirements of the European standard EN 170, i.e. protects the eyes against ultraviolet rays - especially recommended for people who are in an environment where UV rays dominate . In addition, the polycarbonate glasses are covered with a Platinum coating, which protects them even better against evaporation and scratches, thus meeting the requirements of E N 166 K and N. The glasses fit perfectly to the face thanks to a contoured frame finished with flexible foam. Ventilation is guaranteed by a system of holes.