A strap is a long band of durable material used for fastening, carrying or adjusting: a bag's shoulder strap, a camera strap, removable and interchangeable straps for watches and bags, straps in utilitarian and military style. Unlike a waist-accent belt, a strap more often has a functional purpose, though in fashion it has long become an expressive detail too. Wide textile straps, carabiners, webbing and buckles came from work, hiking and military gear and made the strap a fashionable element of streetwear and functional aesthetics. An interchangeable strap lets you 'refresh' a bag or watch by changing its character. A strap combines practicality, sturdiness and a modern, slightly 'technical' charm. It is a detail in which function becomes style.