The asymmetric construction of the upper reduces pressure points, whilst the two disc fastening makes for fast access and a secure fit. The NF Ergonomics insole gives the best possible cushioning and pressure distribution, and comfort is further improved by the perforated waist layer and ventilation slots in the outsole. The toe box and heel cap are also both reinforced for protection and better heel lock. Finally, a replaceable heel stud improves durability and sustainability for a longer product life.Key Features:Disc closureNf ergonomics lastNf ergonomics insoleAsymmetric design for equal pressure distributionReinforced toe boxReplaceable heel studsClipless-readyGlass fibre outsoleDirt-resistant upperVentilated tongueReflective heel detailStiffness index: 9