The Whitsome Shirt Jacket is constructed from 9.2 oz eight wale cotton corduroy, which is a midweight fabric with thick ridges, and is cut to a loose fit. The shirt jacket has also been garment-washed for softness and protection against loss of shape. Insulation comes by way of a vertical-quilted, nylon taffeta lining. Two large patch pockets on the chest — one of which features a woven Square Label — and two welt pockets complete the design.