This Smartwool Secret Sleuth No Show 3-Pair Pack of liner socks will give you a hidden comfort thats perfect for flats! No-show cut keeps your socks just out of sight and your feet feeling dry and comfy. Sold as three-pair pack. Features a more narrow profile thats perfect for a womans foot. Merino fibers provide outstanding softness and construction. Ultra-light cushioning provides maximum performance with minimal cushioning to works well in close-fitted shoes. Internal gripping at the heel helps keep it in place. Style Number: SW000651 60 percent Merino wool, 39 percent nylon, 1 percent elastane. Machine wash inside, tumble dry. Made in the USA.