Getty/Alberto Pizzoli
- Yann Sommer saved the decisive penalty as Switzerland knocked France out of Euro 2020 on Monday.
- The 32-year-old has been training using battery powered, strobe sunglasses prior to the match.
- The Japanese product is designed to "improve your vision by intermittent shutter."
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Goalkeeper Yann Sommer was his country's hero on Monday night as Switzerland knocked reigning world champion France out of Euro 2020.
After a thrilling 3-3 draw which resulted in a penalty shoot-out, the 32-year-old saved Kylian Mbappe's final spot kick to send his team into the quarterfinals for the first time ever.
The secret to Sommer's history making moment? Battery-powered, shutter effect sunglasses.
At least that's what the Borussia Monchengladbach star and his Swiss teammates have been using in training to improve their reaction times and anticipation.
Sommer, Jonas Omlin, Yvon Mvogo, and Gregor Kobel were all seen wearing the glasses while training for the last 16 clash against France.
Made by Japanese company VisionUp, the glasses have an adjustable shutter speed which provides users with different levels of sight to improve a wide array of visual skills.
"VisionUp Training Glasses stimulate your brain and improve your vision by intermittent shutter," says the product's website, which features photos of Sommer on it.
"You can easily improve brain processing speed and visual ability, such as, kinetic visual acuity, dynamic visual acuity, peripheral vision, depth perception, hand-eye coordination, etc. Thus you can obtain better athletic performance."
Switzerland went ahead against France on the night courtesy of a fine headed goal from Benfica striker Haris Seferović in the 15th minute.
A 90-second brace from Karim Benzema in the second-half turned things around for France, before Paul Pogba looked to have sealed victory for Didier Deschamp's side with a superb long range strike.
However a late second goal from Seferović and an injury time equalizer from Mario Gavranović took the tie to extra time and later penalties, where Sommer produced the heroics.
"What a match! What an evening of football, " the Gladbach star said after the match. "It was our chance to finally go through the round of 16, because we never made it before.
"It's incredible, we played with heart and with character. It's amazing."
He added: "I'm really proud of the team, how they came back. We always believed.
"Even before the game we said no matter what happens in the game, it doesn't matter if we're down, or if things are going well; we play until the end, we never give up."
Switzerland faces Spain in the quarterfinals on Friday, July 2.