When up grading from a traditional neck strap to a harness, you need to attach your binocular cover properly, so it won't get lost. Paracord eventually comes untied, plastic zip ties bind up when fitting the cover to the lens, our hardware solves all of that. Not to mention with a quick release you may remove your cover altogether with no effort at all. The tiny cord is amazingly strong and wins a tug war contest with most anything. When upgrading from a traditional neck strap to a harness, you need to attach your binocular cover properly, so it won't get lost. Paracord eventually comes untied, plastic zip ties bind up when fitting the cover to the lens, our hardware solves all of that. Not to mention with a quick release you may remove your cover altogether with no effort at all. The tiny cord is amazingly strong and wins a tug war contest with most anything.