What is hefty EZ ovenware bake sheets made of?

Unfortunately, I do not have access to specific product details, including the materials used for Hefty EZ Ovenware bake sheets.

To find out what the bake sheets are made of, I recommend checking the following:

* The product packaging: Look for information on the box or packaging itself. This often includes a list of materials used.

* The Hefty website: You can often find product information on the manufacturer's website.

* Contact Hefty customer service: They will be able to provide you with specific details about the materials used.

I hope this helps!