The term 'sliding fastener' is commonly referred to as a ZIPPER. It is a device used for temporarily joining two edges of fabric or other flexible material, such as on clothing, luggage, and other accessories. Zippers are composed of two rows of interlocking teeth, which can be separated by a slider and then rejoined by pulling the slider in the opposite direction. Zippers are used in a variety of applications, from clothing to furniture upholstery.