TreeSocks Aarau combine simple comfort with special significance: one side of the socks features the iconic NIKIN , while the other side bears the Aarau eagle—the coat of arms of the city of Aarau, home to the NIKIN . This creates an exclusive detail for everyone NIKIN to Aarau and NIKIN . Produced sustainably in Europe, the socks are made from a soft blend of 80% bamboo viscose, supplemented with polyamide and elastane for comfortable wear and a great fit. The ribbed cuff ensures a comfortable fit for everyday wear, on the go, or during active days outdoors.