Go ahead, get sweaty. The Swiftly Relaxed collection, powered by seamless construction, is the ultimate gear for running and training. Designed for Training. A loose fit with a little extra room:Sits below the waistband for moderate, everyday coverage. Silverescent technology, powered by X-STATIC, inhibits the growth of odour-causing bacteria on the fabric. Wide hem prevents ride-up. Skip-the-Chafe, Seamless Construction.