These plates are available as a spare or replacement for the UltimateHeat 12V Heated Takeaway Insulated Delivery Bag.
With one larger plate to fit the base of the bag and one smaller plate to fit the back of the bag.
To fit the plates it is best to turn the bag inside out and the plates fit easier.
Plates are designed to heat to between 50 and 60 degrees celcuis after 20-30 minutes.
A DC Car adapters is also included with each set of plates purchased.