Martino has developed an exclusive cleat sole to add even more grip on icy surfaces to some winter boots. These "rotating cleats" are simple to activate or store: use the provided tool to take out the cleat, turn it around and push it back into the sole. You are ready to go! Psittt! Forgot your tool? A key does the trick very well.
In order to protect your floor, don't forget to store back the cleats in the sole when you get inside.