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Proform, French Fry or Backslap
The Proform is Pit Viper's magnetic-lens goggle: a large cylindrical lens in a semi-frameless frame, with Magic Magnets for lens swaps. Every Proform here comes with a bonus low-light lens and a case. The French Fry comes in two frame sizes, Small for smaller heads and Large for bigger ones, with one lens. The Backslap is semi-frameless, with Worldwide Vision wrapped side shields that Pit Viper says add 16.9% to the overall field of vision; all of ours are the Large, and its lens change is tongue-and-groove, not magnetic.
Pick the lens for the light
VLT is the share of light a lens lets through. For bright sun, the Category 3 lenses here let through 10.5–15%: the Smoke and Red Revo main lenses on the Proform, the Backslap lenses and the Smoke French Fry. The Hot Box Proform's Sunset lens (20%) and the Amber French Fry (27%) are Category 2, for mixed sun and cloud. For flat light, the Proform bonus lenses are Yellow Snow (64%) or Climax (44%). The Clear French Fry (100%, Category 0) is for night skiing.
Fit and helmets
Pit Viper's measurements: French Fry Small 135 × 90 mm, Large 145 × 102 mm, and Proform 185 × 100 mm. All are helmet compatible, with anti-fog coating and frame venting. Try them on with your helmet at any of our three stores (helmets).