Thermal bag of millet seeds to heat in the microwave or cool in the freezer. It is used to relieve different types of pain by using it through dry heat or cold. Available in three sizes, all with washable cover. Size S weighs 550 g, has dimensions of 23 x 15 x 2 cm. Size M weighs 1,100 g and dimensions of 50 x 15 x 2 cm. Size L also weighs 1,100 g and dimensions 28 x 26 x 2 cm.