Our polar fleece sheets are a luxurious and cozy alternative to flannel. So Soft, So Warm, and So Cozy. You will want to stay in bed longer than usual. One customer described the sheets as so comfortable they did not want to go to sleep and miss out on all the luxurious comfort. Turn down the thermostat and enjoy your energy savings. Flat sheets are double sided. Fits up to a 16 inch mattress. This product is available in twin, full, queen and king sets. Sets include one flat, one fitted and two pillowcases. Twins have one pillowcase. Machine wash & dry.