A stiff and supportive shoe with superior comfort and breathability Split leather upper with recycled AirNet panels - For increased ventilation 3D recycled lining - For more breathability and comfort Special anti-deformation recycled midsole Sticky yet durable Boreal ZENITH Quattro outsole - 4-4.5 mm thickness depending on size Central part of the outsole is made with recycled rubber Anatomically sculpted pieces of foam padding - Hold the heel comfortably and securely in place to avoid unwanted movement Lace closure - For a precise yet comfortable fit Slip-Lasted build More info