UPPER - Tough synthetic leathers with low profile amour provides great protection, excellent durability. Low-profile micro-adjust buckle securely holds foot with reduction impact. Cross X Strap is optimized for relieving tension on top of foot during push off motion. INSOLE - Adaptable cup insole conforms and accommodates a wide variety of foot shapes. LAST - Shimano Dynalast provides a precise fit and improves pedaling efficiency. SOLE - Mud-shedding polyurethane outsole lugs with arch pad for pedal stability. Glass fiber reinforced polyamide sole with optional spike mount. Best matched with PD-M780.