Silhouette 2913 SPX Illusion Nylor is a classic and sophisticated semi-rimless frame for men and women. The upper rims gently draw attention upward, emphasizing your eyes. The strong, lightweight frame material ensures these glasses are sturdy and comfortable. Cam-action hinges create a secure fit to prevent unnecessary movement during strenuous activity. These hinges also keep the frame from opening at a greater angle than it should, to prevent stretching or breakage. For a timeless style that’s sensible and attractive, opt for the Illusion Nylor from Silhouette.