These fleece leggings will help keep you warm. They should be Machine washed in cold water, no bleach, tumble dry low heat. 95% polyester 5% spandex. These fleece leggings are luxurious and are a customer favorite. The leggings will help keep you warm. They should be Machine washed in cold water, no bleach, tumble dry low heat. 95% polyester 5% spandex.