I was reading about Steve's adventure of running on snow-packed icy paths and sent along a note in response. In it, I rave for the new Ice Joggers I got for Christmas. Without a doubt, they are the best grips that I have ever tried. And I've tried two. These are my second. I've also worn yak-trax.
The Ice Joggers are better because of the carbide spikes. Instead of the yax-trax's springs, which only sit on top of the ice, the ice joggers' spikes actually penetrate the ice and hold form. I've run across glare ice without breaking stride. I can turn snow-packed corners without missing a beat, and speed across ice covered sidewalks with no fear.
If you live in an area with snow, freezing rain, or other cold-weather disasters, and you want to run outside, you need these.