Go ahead, get sweaty. The Swiftly Tech collection, powered by seamless construction, is the ultimate gear for running and training. Minimal seams to reduce chafe Lightweight Mesh construction for breathability Added elastane improves stretch and shape retention Silverescent™ technology, powered by X-STATIC®, inhibits the growth of odour-causing bacteria on the fabric Great used condition; small mark on bottom of shirt (hardly noticeable)