Uniheat 40+ hour shipping warmers are the first warmers designed especially for small pets, tropical plants and other temperature sensitive products. Simply remove the outer packaging and expose the warmer to air to activate. Preheating before usage is not necessary. Contents: Iron powder, water, activated carbon, vermiculite, wood powder and salt. 240 individually sealed packs per case.
- Designed for reliable and steady heat release for 40+ hours
- Simple to use and deliver optimal results with color indicator on the warmer
- Excellent for shipping live insects, reptiles, tropical fish, flowers, etc
- Provides an average warmer surface temperature of 110 degrees Fahrenheit (38C)
- Environmentally Safe