1. Brown Rice Chiro is a warm iron that uses steam and hot heat generated by heating brown rice. Unlike a warmer body surface, it is characterized by steam to warm the core of your body. You can use it again and again, so its eco-friendly. Microwave safe, no fire or hot water needed. It also naturally cools down so you dont have to worry about burning the heat even if you sleep on the way. 2. For those who have cold or stiff shoulders, it will warm up from the core of your body. 3 Directions For Use: Place the heater on the plate and heat it up to 40 seconds to 1 minute at 600 watts. Please do not use it for up to 2 times continuously until brown rice absorbs moisture. 4. Can be used in cold weather. Cold in the fridge or freezer, then use Brown rice does not freeze and can be used according to your body. 5 Storage Method: Brown rice is raw To prevent insect damage, store in a plastic bag and refrigerator, when not in use for a long time. In addition, the thermal and moisturizing capacity of brown rice gradually decreases. We ask you to replace it for 2 years. 6. Usage Notes: Microwave rated wattage, please heat up in case of time. Do not use microwave automatic heating Do not use if you are allergic to brown rice.