Product Features * Specially design for dental medical staff,own inventsd glass,single package for glass frame,save operating cost. * Using high transparent PET material for mask surface,double-faced antifogging disposal,prevent glare phenomenon after long time wear. * Using transparent PC linjection molding for the glass frame,beautiful and pragmatic appearance,can help to remove patients’ disorientation with its imperceptibility. * Scientific fit design,easy to wear by easily clutching. * Normal storage is valid for 2 years.