Boa® Fit System
The Boa® Fit System delivers a perfect fit with the simple turn of a dial, free of the stretch, weight, and hassles of old-fashioned closures. Enjoy a significantly improved level of fit and comfort along with durability, light weight, fast and convenient operation, and on-the-fly adjustment.
PU compound system. The midsole is made of the special microcell compound Esolight 1.0 that provides an excellent energy absorption. Esolight 1.0 provides a correct distribution of the body weight and impacts during walking, thus reducing the stress on the joints. The outsole is made of the Esolight 2.0 compound, for high durability and slip resistance.
The natural structure of the leather is optimized by tanning them in barrels with mineral salts and oils which give the fibres greater firmness and guarantees excellent abrasion resistance. A natural softness with extreme breathability and a standard water resistence is the main trait of this component.
Extremely breathable, the microfiber is composed of a weave of nylon fibers with a thickness lower than a human hair, combined with polyurethane for coagulation in order to give characteristics very similar to those of real leather. It does not age and maintains its characteristics over time. It is also lighter than about a third of the skin, maintaining high tensile strength, tearing and bending.
Seamless technology to bind different materials of the upper without any stitching, but with a high-frequency welding. Bonding on entire overlapped surfaces. This process makes possible to use different materials like PU or MicroTech for bonding them to a breathable fabric mesh, thus giving in a single piece different areas of functionality: breathability where there's mesh, protection where there's PU film or Microtech. And all with a sporty look.
Inox stainless steel midsole is painted with a special resin that allows maximum chemical compatibility with polyurethane. This improves the adhesion between midsole and polyurethane.