These Carhartt shirt jackets are a versatile garment that offers the comfort of a shirt and the warmth of a jacket. These shirt jackets are often lined and crafted with a heavier material than the typical work shirt. The design typically features a button up front and button cuffs for a secure and comfortable fit. Carhartt shirt jackets are built to withstand tougher work environments while providing a more flexible option for layering on cooler days.