The Swiftly Tech Long Sleeve is powered by skip-the-chafe, seamless construction. That means you get a hat trick of features: minimal seams, sweat-wicking and a mesh construction for breathability. Plus, Silverescent™ technology, powered by X-STATIC® inhibits the growth of odor-causing bacteria. With no sweat lines and no odor, people won’t even know you worked out (but your muscles will).