The Monbento Element Graphic Plume Insulated Lunch Box is a must-have for busy lifestyles. This BPA-free container is constructed from polypropylene, stainless steel, and silicone, and is designed to keep its contents at a temperature for up to 10 hours. With its compact and lightweight design, this container is easy to take with you anywhere, whether hiking trips or to a simple picnic with loved ones. Features:550ml in capacity, measures 13.5 x 12.3cm - Airtight container to keep food fresh - Keeps food hot or cold for up to 10 hours - BPA-free and BPS-free - Food grade Lid is made from polypropylene - Container is made from stainless steel - Joint is made from silicone - Dishwasher safe without lid