This 18 mm wide Hirsch watch strap is made of the natural grained black calfskin textured leather. This beautiful watch band tapers to 16mm on the buckle end. It has a medium padding with red contrasting seam and measures 4 mm thick. Length dimensions below do not include the buckle. Add the length of your watch to ensure that this strap would fit your wrist. Image for illustration purposes. This strap comes with steel color only and it does not come with spring bars.