UPPER: Supple, stretch resistant synthetic leather and mesh.Low profile micro adjust buckle and dual off set straps.A snug, durable, breathable shoe which transfers power to the pedal and comfort to the rider. LAST: Women's Specific Fit. Shimano Dynalast secures the foot into the ideal ergonomic position for a more efficient upstroke. SOLE: Shimano Dynalast technology sole. Carbon fiber composite plate inserted. Low profile, lightweight glass fiber reinforced polyamide sole. SPD and SPD SL cleat compatible. Best matched with PD 5700 C.