Works great, easy to use
I can't believe how long I waited before getting a gaiter solution. I run mostly on trail and for long days (e.g. many hours) sand, dirt, pebbles, and sticks find their way into the shoe. Those invaders lead to irritations and even blisters if you're on your feet long enough. These gaiters do a great job of keeping out the junk, so you can keep running with happy feet. I bought these ahead of running the Zion 100 hundred miler, and I think they were key to my success. Only once during in the whole race (which was more than 90% on trail or dirt road) did I pull something from my shoe. The strap held up fine for this distance. They'll wear differently based on the shoe tread you have. If the strap tucks between treads, good for you, and you'll have less wear. If the strap hits a lug and comes in hard contact with the running surface, then you may need to hit up the friendly people at Kahtoola support for a warranty replacement. And replacements are sold for cheap anyway. I'm a happy customer.