Its a small section inside the shoe that can expand up to 5 millimeters to prevent numbness. Without any extension system, the toes end up on top of each other and tend to get numb.
Louis Garneau Tri X-Speed XZ Shoes 47 Black
Triathlon Bike Shoes for Sale
Whether you ride with an SPD system or standard road bike pedals, the Tri X-Speed IV fits them both. No matter if your feet are thin, medium or wide, Garneau's X-Comfort Zone technology prevents numbness by extending the shoe's edges if needed. A wide foot entry makes it easy to perform those first hop-on-the-bike transitions, and 2 hook-and-loop straps help to attach your feet and start pedaling in no time.
Garneau Tri X-Lite III Shoes - Drizzle Men's Size 50
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Feast your eyes on the all new Garneau Tri Air Lite Shoes. LG took their best-selling Tri-400 shoe and gave it all the upgrades you could ever imagine.
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Shoes
Triathlon shoes reach a new level of performance and comfort with the TRI-400 shoes. The Power Flex strap, a reversed hook and loop fastener closure,
Louis Garneau Tri-400 Shoes - Men's 38 US 5 White Retail $324.99
2016 Interbike: 2017 Louis Garneau XC Cross / Gravel Bike