Made of ultimate comfort premium quality polyester lining and acrylic outer knit pattern or design; Easy one size fits most, suitable for Womens sizes 5 to 10; Non slip gripper bottoms make these perfect indoor slipper socks for use on hardwood, tile and other smooth floors; Machine washable on cold or hand wash, air/hang dry; Enjoy lounging in these excellent value soft slippers in the home, office, dorm room or as a gift for a friend or loved one!