These wheat bags are 45 x 20 cm. Filled with Australian grown wheat and lavender. May be used hot or cold.Suitable for shoulders, back, legs etc. Assists in the relief of muscle pain, muscle strain, back pain, migraine and headaches, arthritic pain,bruising, stress and hayfever. Chilled wheat bag assists in the relief of migraine, bruising and sports injury. The wheat bags are easily heated in a microwave as per instructions provided.