The shoes combine extreme stiffness, lightness, and comfort thanks to a carbon sole with a stiffness index of 12, just like Shimano's top-tier road models. Thanks to the seamless construction of the midsole and upper and the Dual-BOA Li2 closure system, the shoe fits with millimeter precision and keeps the foot firmly in place, supported by an anti-twist heel cup. A key feature is the Pontoon cleat system: the replaceable TPU blocks around the cleats ensure a wide and efficient contact surface and stable power transfer, regardless of the cleat position. The durable TPU outsole provides excellent off-road traction and secure walking, while drainage openings let water escape during river crossings and in the rain. The breathable microfiber leather upper and the wrap-around construction combine comfort and durability.