This eco-friendly heat pack can be warmed in the microwave and reused many times. Unlike rice husk heat packs, this one doesn't have a grainy feel. Instead, it incorporates the lightness of *makomo* (Zizania latifolia), making it not too heavy and providing a soft, comfortable feel. The *makomo* inside the heat pack is said to have the property of absorbing and neutralizing energy, while the outer cover made of linen is said to provide energy. The linen and *makomo* are thus balanced in terms of yin and yang. Dried *makomo* is said to purify a space just by being placed in a room. It's appealing because it affects not only the body but also the mind. ◎ Resets negative energy ◎ Raises your vibration It has a significant impact on invisible energies and *ki* (life force). ☆ The cover can be removed and washed (100% linen) ~Size & Weight~ Approx. 8cm x 18cm / Approx. 100g ~Materials~ Rice bran (provides gentle moisture to the skin) *Makomo* (provides breathability and a purifying effect) Natural coarse salt (maintains stable heat) Rosemary (for fragrance) Inner fabric: 100% organic cotton Outer cover: 100% linen ~How to Use~ Place the heat pack with the cover on a plate and warm it in a 600W microwave for about 1 minute and 30 seconds. The warmth will last for about 30 minutes. Adjust the heating time as needed. In the hot season, you can cool it in the refrigerator or freezer and use it. ※ After it cools down, reheat it after at least 4-5 hours. ~Various Uses~ ☆ The *Tanden* (the area just below the navel) is considered the "center of the body" and the "source of *ki*" in Eastern medicine and breathing techniques. Warming this area can be expected to have various physical and mental effects. ☆ Warming the eyes and the surrounding area improves blood flow, relieves eye fatigue, and promotes relaxation. A cold eye pillow is also effective for bloodshot eyes and itchy fatigue. ◎ Using it with a lap blanket or blanket will extend the warming time. ◎ It can also be used as a cold pack by cooling it. ~Cautions~ ◎ Be careful not to overheat. Continuous use may cause scorching, so please refrain from doing so. ◎ It can be used for about a year depending on the usage environment. Please store it in the refrigerator when not in use for a long time. ◎ Due to being handmade, there may be slight individual differences in shape and weight. ~Regarding Purchase~ ◆ Please specify the color of the outer cover (blue or green). ◆ We offer a discount for multiple purchases when shipped together.