Overland Women's Gina Hair-On Calfskin Leather Mules Size 39/ US 9 In like new condition. Leather slingback mules Hair-on calfskin, pigskin leather lining, rear strap with elastic panel 2.20" heel, 0.84 pound You’ll make your presence known as soon as you step into a room in the chic Gina mules. These silky, hair-on calfskin leather slingbacks are timelessly fashionable and comfortable to boot, thanks to their stacked heel, elastic-paneled rear strap, and slip-on upper. Featuring gentle traction on the soles and pigskin leather lining. Pigskin leather is renowned for being both extraordinarily supple and highly durable; it is typically sought after for outerwear, collectibles, and riding accessories—including crops, saddles, and gloves.