There is a layer of ice and snow in my town, like many others have. I am an avid walker and was afraid of falling on ice and breaking a leg. These were pretty inexpensive so I decided to try them. They are great! I can walk on ice without falling, and they stay on my hiking boots. I have walked 4-5 miles in these and never had them come off of my shoe! My neighbors are envious of these great inventions. I love these and also hike, I think they would work well in mud and on hills also. Try these. They are great! They fit true to size for me. I wear a ladies 10 and got large, I was afraid they would be too small, but their size is perfect. It does take a bit of effort to put these on and also to take them off, but it's worth it and like I said, THEY STAY ON MY SHOE! I love, love, love these!