This multi-purpose "Prep box" is made of polypropylene (PP).
It is an FDA-approved food-grade material without BPA. It is best used for carrying prep food, snacks, or even small gear(mini burner, salt & pepper, etc...) for every camp cooking or any outdoor journey. It is also good for microwave cooking.
The Elastic band is used for holding the content more secure and could also be used to attach some more gear like our Hex expandable sporks on top of the prep box.