The Spin II incorporates stretch canvas, soft, wide elastic binding, and inner silicon to ensure a seamless fit. Half soles also feature wide elasticized binding along the top line and inner lined silicone to ensure a tight, non-slip fit. Outsole with ballet flat pleating allows toes to spread naturally and suede outsole allows for multiple turns with ease. The innovative fibers within the stretch canvas fabric will always recover to their natural shape. New and improved fit is designed to accommodate Bloch's "C" width.