All I need is a thermos and a tin/aluminum lunch box.

“Today, lunch boxes are generally made of vinyl, with foam insulation, and an aluminum/vinyl interior. As a result, they’re usually much better at retaining their temperature but are less rigid and protective.  Health concerns came to light in August 2002, when the Center for Environmental Health discovered that many popular vinyl lunch boxes contained dangerously high levels of lead..”.- from Wikipedia

Ready to say goodbye to plastic bags and other plastic food containers???
Stainless steel “Eco Lunch Box”:

May 01, 2011