I bought these after another pair of cleats I was using wore out.  I thought the aggressive spikes would provide good grip on the ice, which I need when walking with my powerful dog. They do a good job for that, I haven't slipped once, and the walks around here are a sheet of ice. However, they are uncomfortable and somewhat unstable when walking on the parts of the sidewalk that are ice-free, and they have a tendency to become dislodged in deep snow. They need to fasten to the shoe more securely, and they need more spikes on the outer part of the sole.