The Carex Hot Water Bottle with Fleece cover is a natural way to quickly warm up and relieve stress and muscle pain. The water bottle can be filled with hot or cold water and the fleece cover provides a comfortable fuzzy surface. Use the Hot Water Bottle with Fleece cover to keep warm in bed by placing by your feet or up by your body. Relieves muscle tension or menstrual cramping. The water bottle can also be filled with cold water to sooth aches and pains or to cool your body down and reduce hot flashes.