Just in time for summer our rosso corsa sock was the basis for the free 9 sock but weve added a new mesh construction to the cuff to make it a bit cooler for summer the graphics look great with any castelli product but they were specifically designed to match the new free jersey and free bibshort features meryl skinlife antibacterial yarns 9 cm height durably waterproof and long lasting weather protection backed by the guaranteed to keep you dry promise weight 56g