We have been having a rough winter in NH. I am sick of sliding around on the ice in my yard when I try to take the dogs out.  After falling once, I decided to order these.  This is one of the best purchases I have ever made. They are easy to put on and take off. They come with replacement grips. I have been using them for about two weeks and feel very safe on the ice. They make me feel surefooted even when the dogs are yanking me with the leashes.