Thorlo WX Walking Socks is constructed with THOR LON fibers for superior softness, resilience, durability and moisture-wicking for drier, better feeling feet. Cushioned instep and spandex in the arch for a better fit, more support and less pressure on the foot for more comfort while walking. Low profile toe seam won't rub or irritate the foot. Unique padding specifically designed for walking, clinically show to reduce blisters, pain, pressures and moisture. Enjoying active walks on the track, around the neighborhood or out in the countryside resulting in low to moderate stress on the feet. Specifically engineered to deliver protection and comfort for any walker prone to blisters, foot pain, or discomfort. Care Instructions: For longer product life, maximum protection and comfort, wash and dry inside out to fluff up the pads using liquid fabric softener after each use to lubricate the fibers for longer life. For optimal benefits, liquid fabric softeners are always recommended. Do Not Bleach. Wash Normal: 105F/40C. Dry Normal in medium temperature. Do Not Dry Clean. Do Not Iron.