TR-90 is one of the polymer materials that has a memory. At present, it is the most popular super light frame material at the international level. Its features are super toughness, impact-resistance, wear-resistance, low friction coefficient and so on. Soft, durable, and flexible. According to its special molecular structure, it is good chemical resistance making it hard to distort in high temperatures.
TR-90 does not release any chemicals which meets the European requirement of food-grade materials. The surface of TR-90 frame are smooth. Its density is 1.14-1.15 (frame can float in salty water) It is lighter than any other plastic frames.