MULTIFUNCTION The main feature of this sole is the greater grip due to the combination of 3 particular materials. In fact, rods made with a particular abrasive compound are inserted into the rubber tread but above all you can see rings made of a particular high-tech fabric that maximizes grip on any surface. The fantastic "grip" qualities of this type of sole are evident on the most difficult surfaces. Comparative tests carried out in the laboratory have shown that the Multifunction sole adheres up to 20% more on ice than a traditional rubber sole. Even more impressive are the results of the test on ceramic and steel, +25% and +32% respectively.