inForm Pro last delivers an ergonomically optimized, high-performance fit;100% OCLV carbon sole is extremely lightweight and stiff for efficient power transfer;Heel-mounted Boa IP1 dial offers precise, two-way fit adjustments;Stiffness index 12 of 14;Heel Reel draws foot down and back to create a secure heel lock for a more efficient pedal stroke;No-sew, fused upper for lightweight construction;