Fit: Fits True to Size. The F-13 Vulc by Fila is a must have for any man's collection. This shoe features a synthetic upper with lace up and velcro closure, cushioned athletic insole for comfort, vintage Fila retro design, and a rubber gum outsole. Fila has become synonymous with performance and sophistication. Worn by many internationally recognized athletes. Fila uses premium fabrics designed to radiate the sophistication of Italian craftsmanship, while allowing maximum flexibility during performance.