On Running Comfort-T performance shirt in a dark grey heather. This technical short-sleeve top is engineered for comfort during high-intensity training or casual wear, featuring a moisture-wicking mesh interior and a soft, breathable outer fabric. A discreet side zippered pocket provides secure storage for small essentials, while the split hem and flatlock seams ensure a full range of motion without irritation. The interior neckline is finished with the brand's signature "Run on clouds" taping.