Our DriZip™ Industrial Zippers make it easy to open, a breeze to close, as well as create a seal you can rely on. The DriZip™ Zipper is made of PVC, and is to be used in conjunction with our DriZip™ Industrial Slide. This is a 2-track system. Sold by the roll, 150/feet. Call (888) 727-7050 or Contact Us for a Quote on bulk purchase options