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Bertoni eyewear, protect the eyes while running and is important in every season. Who runs for sport or for passion, needs a pair of glasses which can guarantee an excellent visibility in all weather conditions and a light but flexible frame that is never annoying for the runner also after many kilometers. The fitting of the frame must be comfortable but also has to have an excellent grip so that the glasses always stay in position. This is why many models of Bertoni glasses have adjustible nose pads and frame arms which always give a perfect grip.