SOLE: Ultralight Mtb The ultralight Mtb sole is entirely made of ultrathin carbon. It combines extreme stiffness with a record-breaking weight because the result of biomechanical studies that allowed us to structure the sole only where it was necessary for the pedal stroke. The amazing reduced thickness is the result of a major integration between the sole and the upper. First on the market, the ultralight Mtb sole features as world exclusive Vibram(R) rubber cleats for unmatched grip. UPPER: Ultralight microfiber UPPER CONTRUCTION: Biomap without stitchings Your energy is precious, never waste it. That's why our shoes are designed with BioMap technology. Northwave soles, uppers and all their components are anatomically compatible with every cyclist's feet and are designed to keep the foot in the right position while pedaling, transmitting power directly to the pedals without wasting any energy. CLOSING SYSTEM: SLW2 The micrometric system S.L.W. 2 (Speed Lace Winch) represents the evolution of the closure system. Maximum precision and modularity. The innovative step by step closure means you can tighten and enlarge the fit in a few moments. The side button provides a dual function: by pressing, it features a micrometric release and lifting it allows a complete and immediate opening of the shoe. More lightweight and thinner. The dial has been completely redesigned in size and weight, resulting in being significantly lighter and thinner. The external covering in soft touch material also makes the grip more effective. The ergonomic shape of the S.L.W. 2 ratchet follows the anatomy of the foot to make it really comfortable. The S.L.W. 2 ratchet is easily replaceable. The cables come from the best technology derived from the world of sailing. HEEL: Integrated Heel System The new unibody construction of the uppers allowed to integrate an efficient heel retention system inside the structure, without the need of external elements. Same efficiency, reduced weight. FOOTBED: Extreme Air Ultralight, anallergic and antibacterial, it keeps your feet amazingly fresh with numerous vents that correspond with the vents on the sole. TECH: PU thermowelded reinforcements Lightweight and comfortable unibody upper. The minimized stitching and the absence of overlapping material allow us to eliminate all the unnecessary weight. The reinforcements on the side and toe have been directly thermowelded on the upper, so as to guarantee maximum protection with a minimum weight. WEIGHT: 280gr Material