Rice Bran and Brown Rice Kairo (Hot Pack) Large size. How about a gift for friends or parents? The cover is a mimosa pattern in blue-gray. It can be removed and washed. The inner bag uses 100% cotton. It is sewn to prevent the contents from spilling. What is a brown rice kairo? It is an eco-friendly hot pack that can be heated in the microwave and used repeatedly. The moist heat from the brown rice warms the body from the core, gently reaching and warming the depths of the body. The moist heat from the brown rice gently warms: Stomach, back, under the buttocks, groin For stiff shoulders, menstrual pain, and coldness You can leave it in your futon while you sleep. Large size 27cm x 20cm Thickness: Approximately 2cm Weight: Approximately 600g Contents: ・Brown rice ・Roasted rice bran ・Coarse salt ・Red pepper (insect repellent effect) How to use: Heat in a microwave at 600W for 1 to 2 minutes. Increase the time until it reaches your desired temperature. Be careful not to overheat. This can cause burning or fire. The warmth lasts for about 30 minutes. When reheating, please wait 3 to 4 hours before using again. Replace the contents after 1-2 years of use when they become hard. Because it is handmade, we make it carefully, but it is not perfect like a mass-produced product. Thank you for your understanding. *This is not for medical purposes or to improve symptoms.