The thermal packaging solution you need will depend on the following:
The product you’re shipping (e.g. perishability, weight, fragility, size)
The temperature that needs to be maintained in the pack (ambient, chilled, frozen)
The shipping journey (How you will be shipping the product – by air or courier networks etc.)
You should also consider if there are any legal requirements for the particular product you’re shipping, such as food or pharmaceuticals. This may differ depending on where you’re shipping to and from, especially if you’re shipping internationally.