Optimal insulation performance. Even when the little ones' eyes are bigger than their hunger, leftover portions can be kept warm for hours. When food is filled at around 80 degrees Celsius, it remains about 40 degrees warm even after 10 hours, and regular beverages stay hot for up to 8 hours. The unbreakable stainless steel thermal container is also excellent for keeping things cold. Durable and impact-resistant - odorless and tasteless. Stainless steel is particularly impact-resistant. If the thermal container slips from your hands, the contents remain securely sealed. Thanks to the screw cap, the thermal container is drip and leak-proof. Opening and closing it is incredibly easy.