This very clever lunch box is made from BPA-free, food grade silicone and biodegradable Eco Plastic. It is made to hold anything from a sandwich to last night"s leftovers and even soup. Now it"s easy to "go green" by using this reusable waste-free lunch system. Simply compress it to 1/3 of the size so that it is easy to carry and store when you are done. As an added bonus, this set comes complete with its own innovative two sided spork that snaps into the lid.