With the current trend of cover lifting devises (which we highly believe in) the hinge is one of the most worked parts of a cover. This hinge is constructed of the same high quality vinyl as the rest of the outer cover. It is not simply two halves of the cover sewn together, but is a one piece hinge, double stitched into each half of the cover. One of the options available is additionally reinforcing the hinge by adding an extra layer consisting of the same 1-1/2" wide nylon webbing the handles are made from. This upgrade consists of a strip of nylon webbing running the entire length of the hinge! While other covers hinges are their weakest point, this nylon webbing reinforcement makes these hinges the absolute strongest possible!