Sefton Bomber Jacket in Black. The jacket is cut from a sleek, durable cotton twill with a water repellent technical treatment. Taking inspiration from vintage military originals and varsity sportswear bombers, the jacket has a boxy cut with a large brass double zip. our bomber also features a soft ribbed collar, cuffs and hem as well as there are two hand pockets and two internal pockets. The midweight fabric makes it suitable for almost year-round wear.