We designed this anti-stink long-sleeve layer with running (and sweating) in mind. Silverescent® technology, powered by X-STATIC®, inhibits the growth of odour-causing bacteria on the garment. seamless construction No side seams—seamless construction in the body minimizes chafing. lightweight no side seams four-way stretch silverescent® technology Silverescent® technology, powered by X-STATIC®, inhibits the growth of odour-causing bacteria on this garment anti-stink features Designed for: Run Silverescent® technology: Powered by X-STATIC®, it inhibits the growth of odour-causing bacteria on the garment No chafe: Seamless construction in the body minimizes chafing Thumbholes: Help keep your sleeves in place and hands warm Fit : Body Skimming, hip length Ventilation: Engineered Mesh is placed in high-sweat areas Size 6 please see the sizing chart in the picture section for the measurements Pre owned in good condition Smoke free home Pet friendly home