Take flight with the Ultraweave line of sports essentials, an advanced technology designed for the long-distance runner so you can focus on the horizon. Ultraweave technology gets its name from its ultra-lightweight, four-way stretch fabric, designed to enhance and support your movement from the first mile to the last. The Ultraweave S FSTR Running Jacket has what it takes to propel you farther, faster, with Ultraweave and dryCELL technologies that will help you reach new heights of performance and comfort longer.