Designed for runners of all levels, the Unisex PRC x KARHU sock offer breathable support, a secure fit, and lasting comfort on every run. Crafted from a lightweight blend of 97% polyamide and 3% spandex , running socks provide stretch, durability, and support . Materials of the KARHU Unisex PRC x KARHU sock - 97% Polyamide - 3% Spandex - Made in Italy ####description-start#### Take every stride in comfort with the KARHU Unisex PRC x KARHU Socks in OG / White . Engineered for training, racing, and everyday runs, these lightweight socks combine a polyamide and spandex blend to deliver breathable comfort, targeted stretch, and a secure fit that moves naturally with your foot. The Post Line, a collaboration between KARHU and London's Progress Running Club, retraces the historic postal route once run between New York and Boston.