With a combined disc and velcro strap fastening, it's quick and easy to put on and secure. The ripstop fabric used for the upper and reinforced PU heel cap and toe box offer excellent protection and durability. The newly developed A-Traction rubber compound on the outsole does what its name suggests, giving excellent traction both on flat pedals and off the bike. A glass fibre nylon shank offers exceptional pedalling efficiency whilst providing enough flexibility for walking. And the NF Ergonomics insole is designed to combine the best cushioning and pressure distribution, for day long comfort.Disc closureNf ergonomics lastNf ergonomics insoleA-traction rubber compoundAsymmetric design for equal pressure distributionCUBE protection shieldFibre-reinforced nylon outsole for clipless pedalsDirt-repellent upperStiffness index: 8