Thermo Safe Polar Packs, model FPP56, Reusable Foam Brick Ice Freezer non-ice Packs. Size are 9 1/4" X 10 3/4" X 1" Thick. These are enclosed with heavy plastic and are great for Ice Chest and Shipping Containers
Just place in Freezer overnight and use. These last longer than Ice packs and don't give off moisture.
These are used industrial and work amazing !!!
Also available as 3 pack