Questions? Leave a comment below! Go ahead, get sweaty. The Swiftly Tech collection, powered by seamless construction, is the ultimate gear for running and training. skip-the-chafe, seamless construction Minimal seams to reduce chafe Lightweight Mesh construction for breathability Added elastane improves stretch and shape retention features Silverescent™ technology, powered by X-STATIC®, inhibits the growth of odour-causing bacteria on the fabric Thumbholes