Promotion Alpina Twist Four VL+ tin-black / Varioflex+ black fogstop – Glasses

The Twist Four VL+ with half-rim is part of the Performance range and is aimed at keen athletes who demand three levels of protection and self-tinting lenses. Whatever your preferred terrain you’re sure to find your perfect partner from among the different colour combinations. The glasses are extremely lightweight, nearly not noticeable with open frame and especially suited for running or biking activities.Features:

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

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.Optical Glazing: Sports frames with the option of corrective lenses with direct glazing that are customised specially by the optician to suit the individual wearer. This glazing offers the wearer perfect vision – both during sport and when they’recarrying out everyday activities. With direct glazing, the corrective lenses are inserted directly into the frame. The glazing spectrum for the most powerful lenses generally ranges from approx. -4.0 dpt to +4.0 dpt. For individual arrangements, please contact your optician.Frame color: grey/blackIncluded in delivery: glasses, sac/cleaning tissue for lensesLense tint (color): photochromic blackWeight supplement: manufacturer’s specs