About several kinds of frames

 Tortoise Shell Frames, a more expensive frame material, the use of less, its main advantages are many, light, durable, bright color, will not cause allergic reactions to the skin. Tortoiseshell Glasses Frames

Pure titanium Clear Frame Glasses, belongs to a kind of metal element, is the lightest kind of metal, only 60% of copper, not easy to rust, corrosion resistance is better, can resist all acid and oxide. At the same time, pure titanium is non-toxic, compatible with human skin and very flexible.

Tr90 frame, a polymer material with memory function, is the most popular ultra-light Glasses Frame Measurement material in the world at present. With ultra-light toughness, wear resistance and collision resistance, it can prevent eye damage caused by breakage and friction of the Tiny Glasses Frames in violent sports. Moreover, the chemical resistance is very strong, it is not easy to deform at high temperature, and it can be resistant to high temperature above 380 degrees in a short time, and the physical properties are very good.