Item Type: Heated Insole_x000D_ Product Material: Wormwood, Non Woven Fabric, Iron Powder, 1Rapid Heat Generation: The insole heats up quickly throughout the soles of the foot, with an average temperature of about 45C, and continuous warmth. 2Independent Packaging: Heated insoles foot warmer adopts clean and hygienic independent packaging, compact and portable. 3Comfortable to Use: Wormwood self heating insole is comfortable, shock absorbing and non legged, tightly pressing the edges and no powder leakage. 4Continuous Warmth: Disposable foot insole heated free of charge, easy to use, continuous warmth, effective warmth. 5Wide Application: Self heating insole can be used in multiple scenarios, such as school, outdoor work, office work, etc.1.The insole is disposable, please do not reuse it._x000D_ 2. This product starts to heat up after unpacking. Please do not open the separate package if you do not use the product. Use a pair for one day.20 xHeated Insole