72 Hour Disposable Reptile Heat Pack

CHOOSING THE RIGHT HEAT PACK There are 40 hour and 72 hour disposable heat packs. Each has different peak time and temperature as well as activation time. 40 hour heat packs activate in approximately 40-50 minutes. It is the most popular type for shipping reptiles, amphibians, and insect shipping. The surface temperature is about 110 degrees at its peak. It releases a steady temperature and peaks between 17 and 19 hours. 72 hour heat packs activate slowly, up to 3 hours. Their maximum temperature is similar to the 40 hour heat pack. 72 hour shipping warmers reach their peak temperature in approximately 24 hours. 72 hour UniHeat shipping warmers are the best choice for 2 to 3 day shipments. USING THE HEAT PACK The idea of using heat packs for shipping is not to achieve the optimal temperature inside the box but to keep the temperature from falling so low that it causes the animal to be overly stressed or die. If testing is needed before use, open the vacuum sealed package and roll i