The UniHeat 96 hour heat pack (shipping warmers) is a popular heat source for those who are shipping reptiles, amphibians, insects, invertebrates, fish, plants and other perishable items.
The 96 hour heat pack will activate in approximately one hour and reach its peak temperature of 140°F (60°C) in approximately 9 hours. The heat pack will then gradually drop to 100°F (38°C) for remainder of its operational life. One 96 hour heat pack will increase the temperature of a 1cu. ft. insulated box by approximately 10 degrees, for every additional heat pack that you use the temperature will raise an additional 10 degrees. Ideally the 96 hour heat pack is used for priority 3 day shipping.
Heat packs are not guaranteed to keep animals alive in all temperatures, as there are many variable to consider. Please use good judgement when packing live animals for shipping, their wellbeing depend on it.