Fits women's shoe size 5-10. One size fits most women. Each pair is fully lined with soft and fluffy Sherpa so your feet are always warm and comfortable. The plush and inside base are super soft and nice on your feet, they keep your feet nice and warm. Non-skid bottoms keep you steady, and you can wear them on the go! Our stylish and fashionable slipper designs decorate your everyday life. inner:100%polyster, outer:98%acrylic,2%spandex Mashable washable.