Pre-owned, in excellent condition. Does not have size tag but is a lululemon size 6. Pit-to-pit measurement: 19 inches We designed this anti-stink long-sleeve layer with running (and sweating) in mind. silverescent® technology Silverescent® technology, powered by X-STATIC®, inhibits the growth of odour-causing bacteria on this garment anti-stink features Designed for: Run No chafe: Seamless construction in the body minimizes chafing Ventilation: Engineered Mesh is placed in high-sweat areas Relaxed fit, hip length: Layers easily and gives you room to breathe