- To activate, just open the pack
- All natural ingredients heat up when they contact oxygen
- Seal from oxygen in Zip-Loc bag and reuse the next day
- Self-contained packs add heat anywhere when exposed to air
To activate, just open the pack
All natural ingredients heat up when they contact oxygen
Seal from oxygen in Zip-Loc bag and reuse the next day
Self-contained packs add heat anywhere when exposed to air