Black+Blum Square Microwaveable Multifunction Food Box Stainless Steel

The Black+Blum Square Microwaveable Multifunction Food Box is stainless steel that's genuinely safe to put in the microwave, tested and approved by the Good Housekeeping Institute. A vacuum-sealed lid lock keeps it 100% leak proof and airtight, and the lid can stay on while microwaving, which speeds up heating and prevents splatter. It comes in two sizes for meal prep, food storage, or a daily lunch box, and is dishwasher, oven and freezer safe throughout. Features Genuinely microwave safe steel: Tested and approved to go in the microwave, not something most stainless steel containers can claim. Leak proof, airtight lid lock: Keeps food fresher for longer and prevents spills. Lid can stay on while microwaving: The lid lock vent lets steam release, so it heats faster than other steel boxes and won't splatter. Stackable for easy storage: Boxes and lids stack neatly together. Dishwasher, oven and freezer safe: Just not the lid in the oven. Specifications Small: 1.1L, 19.5cm x 19.5cm x 5.8cm, 310g Large: 1.4L, 19.5cm x 19.5cm x 7.7cm, 320g Material: Stainless steel (304/18-8), BPA-free polypropylene, silicone Care Microwave: Genuinely microwave safe. Heat one box at a time, maximum 2 minutes before stirring and repeating. Keep away from metal surfaces, cutlery or foil while microwaving, and don't use empty. Dishwasher: Dishwasher safe, lid on the top rack only. Oven: Box is oven safe, the lid is not. Freezer: Freezer safe, leave room for liquids to expand. Cleaning: Wash all parts with warm soapy water before first use. Avoid bleach, chlorine-based or abrasive cleaners, which can dull the finish. Questions and Answers Q: Can I really put this in the microwave? A: Yes, it's genuinely microwave safe steel, tested to extremely high standards and won't cause sparking. Q: Are there foods I should avoid microwaving in it? A: Avoid foods that heat to extreme temperatures, like popcorn or sugar, as these can cause burn marks, and take care with oily or acidic foods like tomato soup. Q: How do I open it? A: Push the button to release the lid lock, then pull the lid upward slowly rather than quickly. Q: Can I put it in the dishwasher, freezer and oven? A: Yes to all three. The lid is top rack dishwasher only and isn't oven safe.