Black Eyeglasses replacement temple arms, 138 mm long and width is 7.5mm.
Eyeglasses temple is a convex tooth, tooth thick is 2mm, tooth hight is 6.5mm.
Please check the detail sizes of technical mesurement on images.
TR90 is a thermoplastic polyamide. TR90 frames are superlight, extremely flexible yet super strong with 100% memory allowing the frames to bounce back to their original shape. TR90 can keep its properties in extreme temperature including low and high temperatures, as well as extremely humid or dry conditions.