Alpina PSO Twist Four VL+ black / Varioflex+ black mirror fogstop - Glasses

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Description of Alpina PSO Twist Four VL+ black / Varioflex+ black mirror fogstop - Glasses

The half-rim PSO TWIST FOUR VL+ has a unique design, highly functional lenses and offers 100% UV protection. The selftinting (photochromatic) Varioflex technology always ensures optimum visibility in all light conditions. The Fogstop coating prevents the lenses from misting up. Prescription glasses can be firmly integrated in the frame behind the protective lenses.

Note: Prescription glasses are not included!

Features:
  • Varioflex+
  • Fog Stop
  • Twist Fit Nose
  • Adjustable Inclination
  • 2-Comp Design
  • Optimized Airflow
  • Optical Insert

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)

Adaptable Nosepad: Rubberised adjustable nose pads to ensure a good fit for any width or shape of nose. The rubber effectively prevents slipping and guarantees a secure fit.

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 PSO Twist Four VL+ black / Varioflex+ black mirror fogstop - Glasses

Product Name: Alpina PSO Twist Four VL+ black / Varioflex+ black mirror fogstop - Glasses
Manufacturer: Alpina
Item Code: ALP350807
Year: 2018
Weight: approx. 34 gram (manufacturer's specs)
Frame color: black
Lense tint (color): black (Varioflex Black S1-S3)
Lighting conditions: Self-tinting, adjusts to light conditions, covers three protection levels, medium to high light protection.
Light transmission: 8-80%
Filter category: S1-S3
Included in delivery: glasses, sac/cleaning tissue for lenses
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