UPPER Perspair® fabric is made to achieve aesthetically and functionally different areas within the same upper. By using different types of yarns in various colors or characteristics and properties, in this case PU Tek for abrasion resistance. 45% of the upper is recycled. LACING Light cord metal system that evenly spreads the pressure. The upper is easily secured, avoiding pressure points. LINING This GORE-TEX Bluesign membrane, contains 98% recycled fabrics, as also ensures maximum weather protection.SOLE The new DYNAMIS TRK ECO sole with PU midsole can ensure comfort, adaptability on uneven terrain and shock absorption. Vibram® Ecostep Evo tread, made with up to 30% recycled rubber, ensures high grip on all types of terrain.