The Ashby Jacket in Castle Black is an unlined shell parka cut from a 250 gsm pigment dyed cotton twill at a mid-torso length. The construction is clean throughout — bound seams on the interior, genuine corozo buttons down the placket, and a box pleat at the back center yoke that adds drape without bulk. The pockets are 3D gusseted with concealed hand entry, and the hood cinches down with a drawstring.