When cheapest eyeglasses slide or when lenses appear to press heavily on the bridge of the nose when worn, the curvature of the legs can be adjusted to make the frame more firmly fixed on the ear, and the center of gravity will also shift back, reducing the weight of glasses sliding and pressing on the bridge of the nose.
Adjust the width of the nasal support. When titanium...
English 
Arabic
French
Spanish
Portuguese
Deutsch
Turkish
Dutch
Italiano
Russian
Romaian
Portuguese (Brazil)
Greek