Carhartt 104392 (formerly known as the Sierra Jacket) is a heavy-duty winter jacket built for cold, blustery days at work and in the outdoors.

The shell is made from Carhartt's well-known heavyweight washed duck at 12 oz (407 g/m²) in 100% ring-spun cotton, sanded and brushed for a softer feel against the skin than classic duck. The body and hood are lined with soft sherpa fleece for extra warmth, while the sleeves feature a quilted nylon lining that makes the jacket easy to put on and take off.

The attached hood has a concealed drawcord for an adjustable fit, and internal rib-knit storm cuffs with ergonomically shaped sleeve straps keep the cold out. A folded bi-swing back and folded elbows provide extra freedom of movement across the shoulders and arms.

The jacket features a zip-close chest pocket with a sewn-on Carhartt logo, two front hand-warmer pockets lined with sherpa fleece, and two internal pockets. Triple-stitched main seams make the jacket ready for years of hard work.