ZENLO 2 Li Jumbo Bento Stainless Steel Vacuum Lunch Jar Box Container XL Sized Zenlo 2 Liter Extra Large Stainless Steel Vacuum Bento Lunch Box This Bento Box is made from Brushed Stainless Steel with a shiny water proof coating. Fitting Perfectly inside includes 3 separate Microwave Safe lunch containers, 1 large 2 small. Very Large size able to store enough food for 2 people. Capable of keeping food hot for up to 8 hours and cold for up to 12 hours with its Vacuum insulation.