Now you can put on the miles without fear of blisters or that crazy nagging in your boot with the Hiking Liner by Smartwool. Sold as a three-pair pack. Lightweight, non-cushioned sock. Higher density impact zones with WOW Technology for longer lasting wool benefits and comfort. 1x1 ribbed cuff. Flat knit toe seam for added comfort. Style Number: SW0114P3 64 percent Merino wool, 34 percent nylon, 2 percent elastane. Machine wash warm and tumble dry low. Made in the USA.