Mechanics Jackets And Coats GreenLightweight Daiwa Pier 39 "Mechanics" jacket, constructed using separate nylon and polyester yarns that have undergone a high shrinkage treatment to achieve a soft, naturally crinkled texture. The construction includes an all mesh lining to promote breathability, functional details inspired by military technical jackets, advanced pleated sleeves and adjustable cuffs. The silhouette appears relaxed with moderate volume. Solid color Large bellows