The Berlin Steel harness composition is designed with strength, courage and power, especially in the mineral colors used of onyx and lead. The first occurrence of an iron object was in the territory of Slovakia dating back to the 15th century BC, i.e. to the Bronze Age. The steel pieces obtained by iron reduction were forged in the era of the Great Moravian Empire, i.e. around 9th century AD. The evolution of this line is executed to refine the reinforcements to strength in order to cater to the dog’s agility in performance.