Alpina Twist Four S VL+ black-red-white / Varioflex+ black fogstop - Glasses

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Description of Alpina Twist Four S VL+ black-red-white / Varioflex+ black fogstop - Glasses

The Twist Four S VL+ is the smaller version of Alpina’s half-rim sports glasses — specially shaped to fit perfect slim faces. The self-tinting lenses adapt to the light, covering three protection categories, and are also non-misting. Extremely lightweight, nearly not noticeable glasses with open frame are especially suited for running or biking activities.

  • Varioflex+
  • Fog Stop
  • Twist Fit Nose
  • Adjustable Inclination
  • 2-Comp Design
  • Optimized Airflow
  • Small Size

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Varioflex is a lens technology which allows glasses to adapt to the weather conditions. Just as the chameleon changes to blend in with its surroundings, so these lenses adopt various tints to protect our eyes. The self-tinting photochromic lenses react to UV light, which causes chemical components within them to turn towards the source, producing a shading effect. When the UV light source diminishes, the lenses become lighter again. The process all takes place in a matter of seconds — giving you glasses that are always adjusted to match the changing light conditions.

FogStop is a coating applied to the inside of the lens. It is not smooth but rough — seen through a microscope it looks quite fissured. This makes it impossible for moisture droplets to form a covering layer, i.e. to mist up the lens, impairing visibility. This could only occur if the humidity level was such that all the fissures filled with water. But before this can happen, the stored moisture actually condenses, keeping the lens clear — no hairdryer required!

Varioflex + fogstop:
  • Break-resistant
  • 100% UV A-B-C protection up to 400 nm
  • Hard Coating on the outside
  • Antistatic fogstop coating on the inside
  • Automatic adjustment of lens tinting to ambient light conditions
  • Tinting range covers 3 protection levels (S1-S3)

Twist Fit Nose: Good sports glasses can be adjusted to fit any shape or width of nose. And Twist Fit Nose is the perfect system, featuring a subtle locking mechanism inside the nose pad.

Adjustable Inclination: The articulated arms allow the glasses to be tilted away from the forehead during strenuous ascents and tilted back to reduce draft on the way down. Clear, mist-free visibility at all times.

2-Comp Design: The combination of hard frame, soft arm tips and nose pads enhances the fit and comfort of the glasses.

Optimized Airflow: Heavily curved lenses in combination with indirect air flow channeling assure vision that is not impaired by draft or fogging.
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Fact Sheet of Alpina Twist Four S VL+ black-red-white / Varioflex+ black fogstop - Glasses

Product Name: Alpina Twist Four S VL+ black-red-white / Varioflex+ black fogstop - Glasses
Manufacturer: Alpina
Item Code: ALP173348
Year: 2016
Frame color: white/red/black
Lense tint (color): photochromic black
Lighting conditions: low light to bright light
Filter category: S1-S3
Included in delivery: glasses, softcase
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