• Serengeti Spectral Control, "Smart Lens" Technology.
• Engineered to Improve Contrast & Reduce Eye Fatigue.
• Precision Ultra-Lightweight NXT Polar PhD® Lenses Lighten & Darken To Changing Light Conditions For Comfort & Clarity.
• Serengeti "Polar PhD®" lenses built on the NXT lens platform feature the newest evolution of polarized and photochromic lens technologies available today.
• The polarizing layer of the Serengeti Polar PhD® lens is engineered directly onto the back surface of the lens utilizing Advanced Polarized Surface Technology, there by removing the disadvantages of conventional film-based polarized lens construction.
• This revolutionary polarized lens technology delivers up to 98% polarizing efficiency without using a film that can deteriorate or delaminate, achieving the same high standard Serengeti delivers with its world renowned polarized glass lens.
• Serengeti Polar PhD® lens photochromic properties are engineered as part of the lens, not a coating,providing premium photochromic function throughout the life of the lens.
• Premium UVA & UVB Protection.
• Choice Of Polar PhD® Drivers Polarized Sienna Copper Lens, or Polar PhD® CPG Photo Grey Polarized Lens.   
• 1 Year Factory Warranty.
• Fast FREE SHIPPING(USA) Via Priority Mail, Arrives in 3 To 5 Days.
• Orders For In-Stock Items Ship Within 24 Hours.
• No Sales Tax (except California).

Sunglasses Are Not Returnable

Altura Size Information
Base Curve: 8
Temple Length: 130mm
Lens Size: 56 x 34 x 56mm, DBL 16mm

OFFICIAL FACTORY AUTHORIZED SERENGETI DEALER