This lunch box features a stainless steel removable container and bonus snack tray, both dishwasher safe. It gradually heats food in 30 to 60 minutes and keeps it warm until unplugged. The lunch box includes a locking lid, carry handle, and detachable 120V DC power cord. Price drops from $15.72 to just $12.99. Shipping is free with Amazon Prime or is otherwise a flat $6 per order.