One pair of single-use chemical heaters for use inside boots.
Chemical warmers activate the moment you take them out of their packaging. They react with air, and produce warmth for up to eight hours. Use inside boots. The package contains two warmers. Single-use product.
![Therm-Ic](https://scandinavianoutdoor.imgix.net/dynamic/manufacturers/THERMIC-LOGO-PRINT-CMYK.jpg?w=170&h=170&auto=compress,format)