Plastic TR 90 is considered to be the ideal material for the manufacture of frames. This is due to the fact that the Swiss grilamide TR 90 is the lightest and most durable polymer, respectively, frames from such a material are very convenient and lightweight, about 25% lighter than frames from ordinary polymers. Also to the additional advantages of glasses made of plastic TR 90 include:
· Monolithic form of the frame;
· High quality material;
· Lightness and flexibility of plastic, you can bend glasses as you want, but the shape of the frame will not suffer from this;
· Unsurpassed heat resistance (you can safely leave glasses in the car on a dashboard without fear that they will be damaged by high temperature), temperature range from -30 to +80 degrees;
· Mirror gloss of plastic (if the frame is polished well, then from transparent plastic it will turn into mirror).