Designed to be the ideal sock for a multitude of activities, the Swiftwick Flite XT Trail Five Socks are perfect for keeping runners comfortable while running. AnkleLock Technology helps deliver added support to protect the foot and ankle during quick movements, making this sock great for those who like to hit the trails and the gym. GripDry Fiber and natural Merino wool is also combined with Swiftwick's signature Olefin fiber to help mitigate any slippage, hot spots, and blisters, as well as provide additional cushion to lighten the blow of repetitive footstrikes. All in all, the Flite XT Trail Socks are a high-performing sock that will do nothing but help get runners where they're going.