Full Turbo Vision filtered sunnies to enhance natural colours, clarity and contrast, whilst looking hella dope. The Originals series from Pit Viper are now polarized with Full Turbo Vision, reducing unwanted glare from snow, water and golfing greens seriously, look it up, to keep your vision sharp and your style sharper. Now also in a Double Wide fit size, for if you like me have a larger-than-average head size that your mother gives you no end of grief about.With 100 UV protection and a low Light Transmission, when you wear these sunglasses, you can spot obstacles, threats and potential foes with ease, as clarity, contrast and definition are improved. Also, if youre a T-Rex, theyll also allow you to see prey even when theyre stationary. Why not.The Originals Double Wide are 11mm aka 1.1cmwhatever 0.43 inches in Imperial wider than their Single Width siblings, alongside being a touch taller and featuring a complimentary but perhaps not complimentary wider nose opening. If you dont know which size suits you, either buy them both and return one or gift it to a narrowerwider-faced friend, OR you can visit the Pit Viper website where you can print out paper templates I myself dont own a printer myself, so all my printing done surreptitiously at the office.