Soft, non slip rubber nosepiece VENTILATION CHANNEL BETWEEN LENS AND FRAME REDUCES FOGGING 5-POSITION RATCHET PLUS 4-POSITION TELESCOPING TEMPLES Ventilation between frame and lens to reduce fogging, giving you a crystal-clear vision.? With adjustable telescoping temples, these glasses can fit almost any head size.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }