Made of 95% Acrylic, 1% Spandex, 4% Other Fiber Great for lounging around the house Make great warm work socks Soft and super comfortable Great colors and designs Fits shoe sizes 6-12 Keeping your feet warm and comfortable this season is a top priority, so whether you use these awesome socks as slippers or as work boot socks, your feet will be thanking you all winter long. These socks also have an inherent moisture management quality, combined with the thermal properties results in this fantastic performing thermal sock. Machine washable so they are easy care to boot. Grab a few styles and colors and be ready for those stocking stuffers for the holidays too.