Modeled after vintage workwear, our Short Sleeve Mechanic Shirt made with heavy-duty 100% cotton. This sturdy fabric is a herringbone twill that is supple with outstanding strength and durability.The half-length front zipper provides temperature regulation and easy on/off. A center box pleat in the rear shoulders provides ease of motion when working in tight spaces. Spread collar with neck closure button tab. Flapless button-close chest pockets.