Leave nothing to chance when it comes to taste, even on the go: With the black and silver Isotherm lunch box, meals and snacks of all kinds stay cold or warm for up to 10 hours, depending on the contents and use. The lunch box is made of stainless steel, polypropylene and silicone and is hermetically sealed so that nothing can leak during transportation. The 0.55 l box is also easy to clean. The container is dishwasher-safe, while the lid must be cleaned by hand.