These Uniheat shipping warmers are ideal for shorter periods, up to 20+ hours, but at slightly higher temperatures, around 155 fahrenheit.

Use in colder weather as a temperature booster in conjunction with other Uniheat shipping warmers chosen to match the transit time duration. Use for the safe shipping of corals, reptiles, plants, flowers, live foods, tropical fish and small animals.

Usefull to have quickly on hand as a substitute heat source for reptiles, insects, amphibia etc during power cuts.