Ferragamo Ladies Sneakers. Cosma Sock series. SKU - 030368 759959. Color - Black. Ferragamo Cosma Gancini Sock Sneakers. These sock sneakers take a futuristic approach, combining technical knit with luxurious nappa leather inserts. Designed in sleek all-black, they feature a chunky, ultra-light rubber sole, double pull-on loops, and a side Gancio detail for a sporty, contemporary finish. Material - Nappa, Technical Fabric. Made in Italy. Please visit the brand website for sizing information.