These classic mountaineering glasses are designed to prevent light entering your eyes from any direction other than through the frames lenses. The lenses offer the most powerful light-blocking power, CAT 4. Another main features is that the frame and lenses are flat allowing for high power prescriptions.
The Glasses are fitted with side light shields and cup type seal to prevent light from entering from above or below the frame. Perfect for Polar Trekking, Mountain Climbing, Hiking and Extreme Sports.
RX Range +4.00 to -3.50 with opposite cyls. to 3.00