The 18 Millimeter Black and Army Green WatchBandit Polished NATO Strap is derived from the classic NATO watch strap issued by Britain to soldiers in the 1960s. The olive green stripes shown on the black replacement watch band are a nod to the military origins of the watch strap design. Only the strongest of nylon canvas is used to produce the strap, so it is capable of resisting wear and tear. At the same time, the canvas is very flexible, meaning it won’t restrict your movements or feel stiff even the very first time that you wear it. The watch band is 28 centimeters long and has 13 sizing holes.