I have been looking for a good leash to run my dog with for quite awhile. And this one fits the bill perfectly. We run streets at night so the reflective stripe up leash is great. The quick snap has never let loose even with a husky pulling on it for miles on end. The ability to snap it around your waist is a must for running and this leash has never unsnapped. I have held many leashes, but that makes it difficult to really run using only one arm. This is a great leash!