TAC (Triacetate Cellulose) lens : which was synthesized by utilizing 9-base lens technology. Therefore, it has 99% polarized effect and UV 400 protection function. Besides, it can weaken hard light and erase reflected light, glare and scattered light effectively to make vision clearer and softer.
TR90 Frame: TR-90 (commonly known as plastic titanium) is a memorable macromolecule material. It is of super-tenacity, crash resistance, abrasion resistance, low friction coefficient. It can prevent the harm to eyes and face owing to eyeglass frame and friction in movement. TR 90 product is ultralight, and the density is 1.14-1.15. It will float if putting in the salt water because it is lighter than other plastic eyeglass frame.