The Zoku Insulated Food Jar stacks neatly and is expertly styled to suit your on-the-go eating needs. Vacuum-insulated, double-walled stainless steel provides optimal temperature retention, keeping food hot for up to five hours or cold for about six and a half hours.Lightweight, stackable container holds healthy homemade meals wherever you roam; polished exterior glimmers with an easily identifiable pop of personalityDurable double-walled, vacuum-insulated 18/8 stainless steel keeps food fresh for hours; maintains heat for five (5) hours or cold for six and a half (6-1/2) hours; 100% BPA-freeTextured grip and small lid offer comfortable, non-slip holdingLarge mouth makes filling, eating, and cleaning a breezeMeasures 3-2/3-inches long by 3-2/3-inches wide by 4-7/10-inches high with a capacity of 10-ounces; hand wash only More info