Hi, I am going on my second year with the Kahtoola. They are far more durable than the other brands of spikes. I will warn you of one thing be careful on what you wish for. On fresh black ice you will have the best traction possible but at the end of the day your feet will/might hurt a bit. I feel there is no give or flex with spikes which causes some foot pain but to me that's a small trade off.
Ted