The traditional Viper model from Bolle provides excellent vision and fits all face shapes thanks to its adjustable temples. This adjustment allows the glasses to be successfully worn by both adults and children. Lenses made of polycarbonate are wide enough and constructed in such a way as to protect the eye from small objects that could hit them. The glasses meet the European standard EN 172, so during their use you can count on harmful UV radiation getting into your eyes. The mechanical strength of this model reaches class F, therefore, the glasses are resistant to mechanical damage when colliding with an object that does not exceed the weight of 86 g and the speed of movement is 45 m / s. The lenses have a coating that protects them against scratches. The glasses come with a flexible strap that allows them to be hung around the neck.