Knucklehead Off Road tree protectors are made from high quality industrial grade nylon sling webbing for superior performance and durability. Each end of the strap is twisted and protected with polypropelene webbing (stronger than Cordura). This provides protection from wear and tear as the ends rub against tow hooks, winches etc. Our unique stitch pattern ensures that our products are less suseptable to breakage and run 6″ back on each end. All of our tree protectors are sewn with double the thread diameter of most competitors.