Short sleeve jersey with a zip made from the Emana® yarn. The elasticized fabric follows the body shape, without restricting it. The absence of seams guarantees comfort, while the pocket on the back allows to keep small objects. The particles in the yarn converts the heat generated by the body in FIR (Far Infra Red) and reflects them to the tissue and muscles generating a delicate and deep heating. This heating helps the blood flow and stimulates the muscles, helping to keep the body temperature constants and reducing the oxygen use, guaranteeing less muscle fatigue which helps to increase the performance.