采用最顶级瑞士EMS Grilamid TR90(塑胶钛)材质,比重1.0 (轻于塑脂镜框20%以上). 超轻、弹性不易变型、耐高温、适长时间休闲运动配戴。*Swiss Grilamid TR90 weight ratio 1.0 (up to 20% lighter than CR-39 Plastic frames)