This is a natural, eco-friendly hand warmer that can be reused in the microwave! It gently warms you up from the core of your body. ┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈ ｟Size｠ Approximately 16cm x 9cm ｟Materials｠ Brown rice Natural salt (for moisture absorption and preventing deterioration) Medicinal mugwort (Ganghwa Island, Sisa-bal mugwort) ｟Contents｠ Approximately 140g ｟Heating Time｠ 600W for approximately 30-40 seconds ｟Quantity｠ 2 pieces ⚪︎Includes an instruction manual. ● After heating in the microwave, use it to warm your abdomen, lower back, shoulders, etc. Warming up is said to improve blood flow and remove fatigue-causing substances. It can be used to relieve coldness and fatigue, for prenatal and postnatal health management, and as a substitute for a hot water bottle. ┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈ ⚠️Caution ◎ Be careful not to overheat. Continuous use may cause scorching, so please refrain from doing so. ◎ Depending on the usage environment, it can be used for about a year. Please store it in the refrigerator when not in use for a long time. ◎ The color and texture may appear slightly different from the actual product. ◎ The product has been opened once to check the contents. Thank you for your understanding.