MICROWAVABLE LUNCH BOX: SIGG outsmarted the metal lunch container realm by redesigning its classic food box with a removable polypropylene insert to heat your food in the microwave, and then stick it in the dishwasher! SPILL PROOF LUNCH BOX: The leftovers you are taking to work or the snack you are bringing on a hike aren't going anywhere with this sustainable lunch box and its sophisticated closure system - Eat with style. LIGHTWEIGHT PREMIUM MATERIAL: This classic metal lunch box is crafted with high quality and reusable aluminium, making it a very lightweight lunch box to carry around in both urban and rural settings alike. FOOD SAFE: All materials used to design each SIGG lunch box are free of harmful pollutants, such as oestrogenic substances and phthalates Enjoy every bite out of this BPA free lunch box, ensuring a neutral smell and taste. SWISS DESIGN: Over 110 years of excellence packed in an award-winning aluminium lunch box - SIGG's devotion to metal with passion for design shines through in their smartly engineered bottles with lunch boxes.