Uniheat Shipping Warmer 40+ Hours, 16 Pack + Free Bonus! Buy A 16 Pack Of 40 Hour Shipping Warmers & Get (1) 20 Hour Shipping Warmer Free!

Simple to use Heat Pack! – Just open unwrap and let sit for 10+ minutes to start the heat process. Put Shipping Item in Shipping Bags and Seal to Lock in the Heat. For Extra Protection Use Bags Double Bagged for Even Better Insulation From the Cold. Designed for reliable and steady heat release for 40+ hours…Excellent Heat Pack for shipping live corals insects reptiles fish flowers etc. Provides an average warmer surface temperature of 100 degrees Fahrenheit