Micrometric buckle a shoe buckle for fast safe precise adjustment with millimetre by millimeter tightening and a simple pressure relief system poliamide sole polyamide and glass fibre component that keeps weight down and rigidity up airing shell system covering design that favours ventilation through a series of vents that allow the foot to breathe high flow 1 resistant and breathable mesh fabric thermo moldable shell inner made from heat mouldable material that easily adapts for an excell