Extra Butter on Twitter: "Paying homage to pioneering trail footwear from the golden years of adventure racing, the Salomon Raid Wind Advanced is a replica of an emblematic piece of Salomon's footwear
![iPhone 6 and Salomon Speedcross 3 running shoes, in March 2016. A heart rate monitor transmits the heart rate via Bluetooth to the iPhone, where an app like Runkeeper logs the data iPhone 6 and Salomon Speedcross 3 running shoes, in March 2016. A heart rate monitor transmits the heart rate via Bluetooth to the iPhone, where an app like Runkeeper logs the data](https://c8.alamy.com/comp/FW8641/iphone-6-and-salomon-speedcross-3-running-shoes-in-march-2016-a-heart-FW8641.jpg)
iPhone 6 and Salomon Speedcross 3 running shoes, in March 2016. A heart rate monitor transmits the heart rate via Bluetooth to the iPhone, where an app like Runkeeper logs the data
![Heart rate monitor, chest strap and Salomon running shoes, in March 2016. The HRM transmits the heart rate via Bluetooth to the iPhone, where an app like Runkeeper logs the data Stock Heart rate monitor, chest strap and Salomon running shoes, in March 2016. The HRM transmits the heart rate via Bluetooth to the iPhone, where an app like Runkeeper logs the data Stock](https://c8.alamy.com/comp/FW8642/heart-rate-monitor-chest-strap-and-salomon-running-shoes-in-march-FW8642.jpg)