... anti-scratch treatment 5.Light weigh 1.Original from Taiwan2.TR90 frame& polymer resin lens 3.2013 new designs4. Light ... close the natural design idea, concise and fashionable. With TR90, it demonstrates the retro trend in fashion. Professional making for ... , natural and environmentally-friendly.3.With special processing technique, TR90 glasses have plenty of functions of heat resistant, wear resistant ...