What is the utility of the reinforced sole?

The long socks of the Performance 1177 line and our sporty leggings are equipped with a reinforced sole that makes them, in fact, performing in terms of controlled fit. Each sole is designed specifically to ensure maximum comfort in every occasion and its conformation designed to cushion the walk while keeping the foot in total rest. The Performance products are perfect for everyday use, or for winter sports; the stud has been tested and implemented by the masters and team of the Schweizer Skischule in St.Moritz.