Yumbox Presto Leakproof 18/8 grade Stainless Steel Bento is designed for kids and adults. The 5 compartment stainless steel tray makes it easy to pack a nutritious lunch for work, school, sports and travel. Yumbox makes it so easy to make your packed lunches look appetizing, colorful and organized. Place an ice pack (not included) outside of Yumbox to keep contents fresh. Both Yumbox and ice pack are intended to go into an insulated bag.