Simply heat it in the microwave for about 30 minutes of comforting warmth. The steam from the azuki beans and ceramic gently envelops your abdomen, providing a soothing warmth that helps to relax your mood. Perfect for when you're concerned about a cold stomach or experiencing monthly abdominal discomfort. The bean shape fits comfortably against your abdomen. It also has pockets to warm your fingertips. Reusable up to 365 times.