• Lens: Spectron 4 (polycarbonate)
• Interchangeable Lens: no
• Photochromic: no
• Base Curve: 6
• Frame Measurements: (lens/bridge/temple) 50 / 20 / 165 mm

 Our traditional mountaineering glasses are a timeless piece, a signature of our mountain history. Rock stars, mountaineers and Julbo fans from all walks of life have sung their praise. This is our traditional mountaineering frame with round lens, a leather nose piece and leather side shields.