The ES125 Double Lens Mask is a low volume, low profile mask that provides and excellent range of vision. The split lens design allows the frame to sit low on the face, and is sealed by a soft, premium quality double seal silicone skirt. A high-impact plastic frame and tempered glass lenses will provide years of quality service. Adjustable mask strap buckles give a more comfortable fit. Protective storage box included. The ES125 Double Lens Mask can be fitted with optical lenses in -1.0 thru -8.0 diopters available in 0.5 increments. A +2.0 magnification gauge reader lens is also available for the ES125. Gauge reader lenses use a ground in half-moon shaped magnifier in the bottom of the lenses. Double silicone seal face skirt Tempered glass lenses Flexible mask buckle Optional corrective lenses / gauge reader lenses available Protective storage box 7 oz (198.5 g) Please note there will be an additional 2 to 3 days processing time for most RX lenses Returns are not accepted for used lens. Only unused lens are eligible for return with store credit.