Signature Pocket S/S T-ShirtOpen End Spun Yarn (Air Spun Yarn) Short Sleeve Pocket Tee. This yarn features a tightly twisted outer layer and a loosely twisted core, which traps air between the fibers. The result is a fabric with a soft, voluminous texture, a dry hand feel, and natural irregularities that give it a vintage inspired character. It provides excellent breathability, quick drying performance, and all day comfort making it perfect for everyday wear with personality.