Black+Blum
Black+Blum Stainless Steel Bento Box
Pickly Score
Composite of certifications, ingredient analysis, and sustainability practices.
Certifications
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Customer Rating
Best for
Zero-waste enthusiasts and outdoor adventures
AI Score Review
The Black+Blum Stainless Steel Bento is a premium, plastic-free lunch solution featuring a vacuum-sealed lid and a fork, ideal for eco-conscious UK commuters.
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Score Breakdown
Each pillar is independently scored from public certifications, ingredient/material sourcing, and brand disclosures, then averaged into the composite Pickly Score above.
In-Depth Review
Direct answer: Yes, the Black+Blum Stainless Steel Bento is a premium investment for those committed to a plastic-free lifestyle. While more expensive than plastic alternatives, its high-grade steel construction and leak-proof vacuum seal provide unparalleled longevity and food safety, making it the gold standard for sustainable dining.
Black+Blum Stainless Steel Bento Box is a premium lunch container made by Black+Blum, sold on Amazon.co.uk from £34.95.
Key facts
- Price: Approximately £34.95
- Size: 1.0 litre capacity
- Made in: Designed in London, UK
- Main material: 304 High-grade stainless steel
- Key certification: B Corp certified brand
- Warranty: 2-year warranty
- Packaging: 100% plastic-free cardboard
Who it's for
This is for the zero-waste enthusiast and the health-conscious UK shopper who wants to avoid plastic contact with their food. Its rugged yet elegant design makes it suitable for both professional office environments and outdoor hiking trips across the UK.
How it compares
| Feature | Black+Blum Steel | Glass Containers |
|---|---|---|
| Weight | Lightweight and portable | Heavy and fragile |
| Durability | Virtually indestructible | Can shatter if dropped |
| Seal | Vacuum-seal valve | Snap-lids (leak-prone) |
| Sustainability | B Corp certified | Often generic sourcing |
How to use it
- Place your food inside the stainless steel base.
- Move the slider divider to separate different food groups.
- Ensure the silicone valve on the lid is in the 'open' position.
- Press the lid down firmly to seat it on the base.
- Press the valve closed to create a vacuum seal.
- Secure the lid further using the included silicone strap and fork.
Pro tip
To keep food cold for longer, place the empty stainless steel box in the fridge or freezer for 10 minutes before packing your lunch.
Reviewed by The Guardian (2025) as a top choice for sustainable commuting, Black+Blum holds a high ranking in Ethical Consumer's latest kitchenware guide due to their B Corp status.
FAQ
Is this box microwave safe?
No, this model is made of stainless steel and cannot be used in a microwave. However, it is oven-safe if you need to reheat food in a conventional oven (remove the lid first).
Is it truly leak-proof?
Yes. The combination of a high-quality silicone seal and a vacuum valve ensures that even when tipped upside down, the contents remain secure and leak-free.
Does it come with a guarantee?
Yes, Black+Blum offers a 2-year warranty against manufacturing defects, reflecting the brand's confidence in the product's long-term durability and performance.
Pros
- ✓100% plastic-free
- ✓Unbeatable vacuum seal
- ✓B Corp certified brand
Cons
- ✗Not microwave safe
- ✗Higher price point
Key Facts
- Brand
- Black+Blum
- Category
- Kitchen & Dining
- Pickly Score
- 92/100
- Price Range
- ££££ (≈ £34.95)
- Avg Rating
- 4.7/5 (3200 reviews)
- Weight
- 460g
- Capacity
- 1.0L
- Material
- 304 Stainless Steel
- Oven Safe
- Yes (base only)
- Dishwasher Safe
- Yes
- Certifications
- Vegan, B Corp, FSC Certified
🌱 Sustainability
Black+Blum is a B Corp; this product is designed for a lifetime of use, significantly reducing household waste.
🧪 Ingredients & Materials
100% plastic-free and vegan-friendly; no animal products used in manufacturing.
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What Reviewers Say
"The ultimate in sustainable lunchware; stylish, durable, and functional."
"A standout product from a brand that truly understands circular design."
"The vacuum seal is a game-changer for anyone who carries their lunch in a bag."
Frequently Asked Questions
Is Black+Blum Stainless Steel Bento Box by Black+Blum ethically made?+
Black+Blum Stainless Steel Bento Box has a recorded Pickly score of 92/100, with catalogue labels including Vegan, B Corp, FSC Certified. The Black+Blum Stainless Steel Bento is a premium, plastic-free lunch solution featuring a vacuum-sealed lid and a fork, ideal for eco-conscious UK commuters.
What certifications does Black+Blum Stainless Steel Bento Box hold?+
The catalogue records these labels for Black+Blum Stainless Steel Bento Box: Vegan, B Corp, FSC Certified. Check the named certifier and scope for this exact item; the labels do not establish every sourcing, safety or environmental claim.
How sustainable is Black+Blum Stainless Steel Bento Box?+
Black+Blum is a B Corp; this product is designed for a lifetime of use, significantly reducing household waste.
What are the key ingredients or materials in Black+Blum Stainless Steel Bento Box?+
100% plastic-free and vegan-friendly; no animal products used in manufacturing.
How much does Black+Blum Stainless Steel Bento Box cost?+
Black+Blum Stainless Steel Bento Box is priced in the $$$$ range for kitchen & dining. Visit the retailer links above for current pricing.
Where can I buy Black+Blum Stainless Steel Bento Box?+
Use the retailer links on this page to check current availability, delivery and the exact variant of Black+Blum Stainless Steel Bento Box. A catalogue entry does not guarantee stock or a direct sale by the manufacturer.
Customer Reviews
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Questions & Answers
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How to choose kitchen & dining
Choose kitchen equipment around the meals you make, the space you have and how you clean it. A durable item that fits your cooker and cupboard is usually more useful than a large accessory set.
| Check before buying | Why it matters | Trade-off or limit |
|---|---|---|
| Capacity, dimensions and compatibility | Check hob type, oven limits, cupboard clearance and portion size. | Large capacity can mean extra storage, weight and washing-up. |
| Care instructions and replacement parts | Look for replaceable seals, lids or handles and realistic cleaning requirements. | Dishwasher convenience may shorten the life of some finishes; follow the maker's instructions. |
| Materials and actual usage costs | Compare coating care, refill or filter costs and energy use where stated. | A premium material alone does not prove better cooking performance. |
Common mistake: Do not assume every stainless-steel pan is induction-compatible or every reusable container is freezer-, microwave- and oven-safe.
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