Stiff carbon sits on both sides of the cleat in the Shimano RC910 S-PHYRE Wide + Ultegra PD-R8000 Shoe & Pedal Package. The wide-fit road shoes use a carbon hollow core sole that stays rigid under hard efforts, and the Ultegra road pedals add a carbon composite body with a stainless steel body plate that limits flex. The shoe's three-hole sole accepts standard SPD-SL cleats, so it pairs with the clipless pedals as sold. A DYNALAST 2. 0 wide last leaves extra room in the forefoot above that stiff platform. What Our Gearhead(R) Experts Are Saying:"Four hours into a road ride my forefoot is still comfortable, and the cause is the PD-R8000's extra-wide platform sharing the load across more of the sole. The wide last handles the other half by giving the toes room."