Side Zip Long Boots Double Sole - Calf Full Grain LeatherDESCRIPTION GUIDI Shoes Collection. One of Guidi's classic and well known staple items. The Long Back Zip Boots have been in production since 2005 from the ladies and long has become a fan favorite. The pair featured are the middle cut models. The boots feature a one piece construction in and out with a slanted design. After numerous wears, the beautiful natural creases in the leather will form at the ankle region. The soles are a stacked double sole.