Durathane is the toughest haul bag fabric on the planet! Durathane is 10 times more abrasion resistant than the vinyl-coated nylon used in most other haul bags! Sure, it costs a little more, but typical vinyl bags wear out in 2 or 3 walls. Our testers have been telling us that Durathane haul bags can last for 20 walls or more! If you want to buy only one haul bag for your entire big-wall career and then be buried in it at the end, Durathane haul bags are the only choice