YKK zippers are the industry standard and highest quality in the market. This  5/8" #8 nylon coil black zipper tape is an  economical, pliable, water resistant zipper. Product contains PET (polyethylene terephthalate - plastic). Heat resistance up to 130 C. Cold resistance down to -60 C. The coil chain is a complimentary to team jerseys, logo's, etc. for use in sport bags, backpacks, etc. Sold by the yard in a continuous strip.