Diadora Attack Road Shoe has a Diapan sole is light weight and rigidity. Exclusive D-Skin upper is soft and supple, yet holds it shape and breathes to keep feet comfortable. Micro CL closure plus two straps with Velcro fasteners. Micro-Mesh perforations for ventilation. Molded external polyurethane heel cup to stabilize rear of foot. Compatible with most major pedal systems.