For all-day fun both in and outdoors, you can’t go wrong with the KEEN Bellingham UltraLite Low Sock. This lightweight, low-cut sock is crafted from a durable blend of Merino wool, nylon, polyester, and Lycra spandex fabric. Impact cushioning in the toe and heel guarantees long-wearing comfort, and a seamless toe in the flex zone helps avoid bunching or chafing. The Anatomical Flex Fit system combines with a left and right design and “Y” heel pockets to deliver a perfect fit every time you slip it on. Contoured arch support provides even greater comfort. Built in the USA.