da premier bet： Switzerland's goalkeepers have been spotted using an unusual 'secret weapon' in training as they prepare for their quarter-final clash with England.

da 888： Article continues below

Article continues below

Article continues below

Switzerland face England on SaturdaySwiss 'keepers using 'secret weapon' for Kane and co.England have scored 3 goals in regulation timeWHAT HAPPENED?

First-choice 'keeper Yann Sommer was spotted wearing a pair of dark sunglasses in training. The thought that he was simply trying to protect his eyes from the sun was quashed, though, when Sommer's backup Gregor Kobel was also seen wearing the glasses.

AdvertisementGettyTHE BIGGER PICTURE

There's more to it than avoiding the glare from the sun. According to The Sun, the special battery-powered glasses can create a slow-motion effect when a ball is struck, and can help goalies improve their anticipation. They appear to be working, too. Switzerland have only conceded three goals so far at the Euros and kept a clean-sheet in their last-16 win over Italy.

DID YOU KNOW?

Sommer and Switzerland's 'keepers also donned the futuristic shades at Euro 2020. The glasses, produced by Japanese company VisionUp and costing upwards of £350, have also been used by tennis and baseball players.

Getty WHAT NEXT FOR SWITZERLAND?

Switzerland have the chance to reach the semi-finals of a European Championship for the first time in their history when they take on England in Dusseldorf on Saturday. Murat Yakin's side will enter the tie full of confidence following impressive displays against Germany and Italy.