Black+Blum Leak Proof Stainless Steel Lunch Box - Large

The first 100% leakproof stainless steel lunchbox with vacuum-sealed closure, by Black+Blum.

Designed for performance and zero mess, the Black+Blum Leak Proof Stainless Steel Lunch Box is the first of its kind to feature a fully airtight, vacuum-sealed lid. This 1-litre container is ideal for carrying a hearty lunch, complete meals, or leftovers. The stainless steel base is oven and freezer-safe, while the clever over-moulded silicone seal ensures a secure fit and leak-free transport.

Included with every box is a stainless steel fork, a silicone strap for added closure security, and an adjustable slider divider that lets you separate different food components with ease. Whether you’re batch cooking, packing lunch for work, or eating on the move, this lunchbox delivers practicality without plastic.

This lunchbox is made from high-quality 304 (18/8) stainless steel, with a durable over-moulded silicone lid that forms an airtight seal. The base and divider are both oven and freezer-safe. The strap is food-grade silicone, and the included fork tucks neatly under the strap for compact portability. All materials are BPA-free and designed for repeated daily use.

Babipur has been a trusted family retailer for eco-conscious living since 2007. We’re proud to offer quality, plastic-free lunch solutions like this durable stainless steel box from Black+Blum that support a lower-waste lifestyle.

FAQs

How do I remove the lid?
Gently lift the valve on the lid until it meets resistance. Then pull up at one of the corners to release the lid. Be cautious when opening if the container holds liquid contents, as they may spill.

Is the Black+Blum lunchbox leak proof?
Yes. It is 100% leak proof when used correctly. Make sure the edges of the lid and the base are dry before closing. Press the lid down firmly on all sides and close the valve to create the vacuum seal. The silicone strap can be used for added closure security. Always allow hot food to cool before sealing to prevent pressure build-up.

Can I put this lunchbox in the microwave?
No. This product is made from stainless steel and must never be used in the microwave.

Is the lunchbox oven safe?
Yes. The stainless steel base and internal divider can go in the oven. The lid is not oven safe and should never be exposed to high heat, as the seal cannot be removed.

Can I freeze meals in this container?
Yes. The lunchbox is freezer-safe. Just be sure not to overfill when storing liquids, as they expand when frozen.

Can it go in the dishwasher?
The base and divider are dishwasher-safe. The lid and silicone strap should be hand-washed to preserve their finish. Avoid using bleach, chlorine-based cleaners or abrasive scrubbers, as they can damage the surface.

What should I pack for lunch in my Black+Blum Lunch Box?
The removable slider divider is ideal for separating different food types inside the same container. Use it to keep dry items apart from wet, or to divide savoury and sweet options. For example, you could pack a pasta salad on one side and a slice of banana bread on the other, or divide curry from rice, or hummus from crackers.