Zojirushi SL-JAE14SA Mr. Bento Stainless Steel Lunch Jar, Silver Round jar with 4 food bowls for hot or cold lunch storage Vacuum-insulated stainless-steel construction keeps food warm Microwaveable bowls measure 15.2, 10.1, 9.5, and 6.8 ounces Easy-to-clean container washes quickly.Made of BPA-free plastic and stainless steel Includes convenient carrying bag for transport Heat Retention After 6 Hours* 153F Cold Retention After 6 Hours** 50F