... 3,Keep Warm&Cold for 4~6 hours Stainless Steel Bento Lunch Box Product InformationModel number:3860BLPacking:48PCSCapacity ... Stainless Steel, Stainless IronMaterial free:Phthalate, melamine, BPA, flame retardants, Nitrosamine, Latex, PVC,SGS:Cadmium, Lead safetyCare instructions:Top rack dishwasher ... and fresh as possible.Hot or cold Unbreakable stainless steel interior and Food-Grade PP exterior, Extra ...