Features: 1. Natural mugwort formula: Made of high-quality iron powder material, constant temperature heating, which can not only improve warmth retention, but also help relax the body and mind. 2. Cute cartoon design: Adopting cute cartoon style design, allowing children to enjoy the warmth while gaining visual happiness. 3. Warm and considerate: good thermal insulation effect, long-term stable temperature. It can make people feel comfortable and warm when attached to the body. For people with cold constitution or in cold seasons, it can provide uninterrupted warmth. 4. Wide range of application scenarios: It can be easily carried and used at home, school, and when traveling. Not only used in winter, it is also a good choice for keeping warm for people who often feel cold in their internal organs. 5. Simple and safe to use: safe and reliable design. It can be used by gently tearing it open without causing any harm to the skin. It's suitable for people of all ages. Specification: Material: Main ingredient: iron powder Dimensions: as shown in the picture Color: as shown in the picture Purpose: Self-heating technology, suitable for people of all ages, safer to use. Perfect for outdoor sports, the office, home and more - experience long-lasting warmth with ease. Package Includes:10pcs Notes: Please allow 1-2cm error due to manual measurement. Due to differences between monitors, images may not reflect the actual color of the item.