The Sandstone Vest is made of tough 12-ounce 100% cotton sandstone duck. It's lined in our ultra warm arctic-weight quilted nylon polyester insulation. The front zipper is covered by a wind flap to help keep the cold out. Inside there's a convenient patch pocket with a hook-and-loop closure and outside there are two deep hand-warmer-style pockets. In back there's a drop tail for added coverage and warmth. Available in five great colors that coordinate perfectly with other Carhartt clothing.