Round jar with 4 food bowls for hot or cold lunch storageVacuum-insulated stainless-steel construction keeps food warmMicrowaveable bowls measure 15.2, 10.1, 9.5, and 6.8 ouncesEasy-to-clean container washes quicklyIncludes convenient carrying bag for transportHeat Retention After 6 Hours* 153°FCold Retention After 6 Hours** 50°F