They are comfortable to wear and soft to the touch, great for lounging around the house any time of the day. These excellent quality knit slipper socks are made with 20% polyester and 80% acrylic, making them durable, soft and comfortable. Hand wash in lukewarm water and lay out flat to dry to extend the use and wear of these thermal slipper socks. Do not iron or bleach.WARM & COMFY SLIPPER SOCKS – These soft slippers socks will keep your feet warm on those long winter nights. Made from the highest quality materials to surround your feet keeping them nice and cozy. Perfect to rest your tired feet after a long day and the sherpa lined inside holds warm air close to the skin, keeping feet warmer longer.