It was thought that the award-winning Sidi Rex Corsa shoe was the pinnacle of recreational boat technology. To this day, Sidi is proud to take the next step in the evolutionary chain: The Vortice. The latest technology, combined with the great skill & craftsmanship of Sidi-based Italian factory technicians, brings together a mix of fresh solutions that meet the driver s desire for safety & comfort. Features Perforated Lorica construction Teflon ventilated net insert Tecno calf tensioner for leg circumference adjustment Tecno Shin & Tensioner Fiberglass reinforced nylon ankle bandage Shock absorbing heel cup Shin plate rocker Fiberglass reinforced nylon toe slider with aluminum insert & air inlet Polyurethane / rubber composite Racing SRS sole This item cannot be shipped to the United States & Canada.