Natural-dyed 100% cotton denim Perfect for warming larger areas in bed, relieving cold feet or for use behind the neck, shoulders or lower back. Each Double Square pillow measures 21” x 10.5” and holds approximately 4 lbs. of clean dried cherry pits. The Double Square blue denim pillow gets its rich blue color from the indigo plant. Same great pits and like all Hot Cherry pillows, can be used hot or chilled! Minimally packaged in twine wrap! * All Hot Cherry® pillows are machine washable ––follow instructions carefully–– and they will last for years! * Hot Cherry® pillows come in six different sizes and three fabrics to choose from. * Hot Cherry® pillows are made with love in the USA.