Switzerland keepers Yann Sommer and Marwin Hitz test out futuristic strobe glasses designed to improve their reactions
Stylish duo become the Men in Black in battery-powered specs to prepare for Saturday's World Cup qualifier against Latvia
SWITZERLAND keepers Yann Sommer and Marwin Hitz went black to the future in overcast weather - trialling dark techno-glasses designed to boost reflexes.
The duo became the Men in Black with new £357 specs created to improve reaction time and protect against age-related decline.
Sommer and Hitz otherwise trained as normal in Lausanne to test battery-powered glasses that Japanese makers VisionUp say will enhance athletic ability.
The specs adjust the frequency of the wearer's winking, giving a slow-motion effect to improve keepers' anticipation.
The futuristic facial wear can also be used to turn the lens off sporadically, which blinds the wearer very briefly and so makes the eyes ultra-alert.
VisionUp also claim the glasses help users follow the moving ball more sharply.
Switzerland, though, hardly need extra help at the moment as they top Group B ahead of Saturday's World Cup qualifier at home to Latvia.
Vladimir Petkovic's men are three points clear of Portugal after winning all four qualifiers so far.