This listing is for a 72 hour heat pack. Purchase this along with any of our plants to add a heat pack to your shipment. PLEASE NOTE THESE ARE LISTED AS 72 HOURS BUT THE TIME THEY ARE KEEPING HOT WILL VARY FROM LOT TO LOT. WE DO NOT GUARANTEE THEY WILL BE HOT. THIS DOES NOT GUARANTEE LIVE ARRIVAL. IF YOU ONLY BUY A HEAT PACK AND YOUR PLANTS ARRIVE WITH COLD DAMAGE. WE WILL NOT REFUND, NO EXCEPTIONS.