Black+Blum: the plastic-free lunch boxes and flasks that come everywhere with us
Packing food for a family is a daily job in our house: school lunches, picnics, long car journeys and days out. I don’t like storing our food in plastic, so finding good stainless steel lunch boxes and flasks was a big priority for me.
Black+Blum is the brand I keep coming back to. Its designs are beautiful, practical and built to last, and they make packed lunches feel like something to look forward to.[1]
Here’s my guide to the three Black+Blum pieces I recommend, what makes each one great, and which to choose.
Shop the Stainless Steel Lunch Box
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Jump to: Lunch boxes · Flasks · My favourites · Questions
Why I love Black+Blum
Black+Blum was co-founded in London by designers Dan Black and Martin Blum. Every product is designed in its London studio, with each detail and material carefully considered for repeated, lifelong use.[1]
The brand is dedicated to tackling food waste and single-use plastics, and for every order it donates at least 1% of the order value to charities that rescue food that would otherwise go to landfill.[1]
💖 Designed in London. By a small, independent design studio.[1]
💖 Built to last. Designed for repeated, lifelong use.[1]
💖 Gives back. At least 1% of every order goes to food-waste charities.[1]
💖 Less plastic. Stainless steel options that keep food away from plastic.[2]
The Black+Blum pieces I recommend
Here’s every Black+Blum product on Glowing Healthy. Tap any one to go straight to it.
Lunch boxes
Flasks
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My Black+Blum favourites
Stainless Steel Lunch Box: our everyday favourite
Made from high-quality 304 stainless steel, it’s plastic-free and built to last. The vacuum-sealed lid with overmoulded silicone is 100% leakproof, and a stainless steel fork is held in place by a silicone strap.[2]
It’s oven- and freezer-safe, and comes in regular or large. The large size has an internal divider.[2]
“I love this lunch box because it means I don’t have to store our food in plastic. It feels so much cleaner and healthier, and I know I can rely on it when we travel.” - Georgie x
Shop the Stainless Steel Lunch Box
Food Flask: warm lunches anywhere
Vacuum-insulated stainless steel keeps food hot for up to 6 hours or cold for up to 8 hours, perfect for soups, curries, stews or a chilled salad. It’s 100% leak-proof, and your food only ever touches steel.[2]
An ergonomic ladle spoon sits neatly against the flask, held in place by a machine-washable elastic strap.[2]
“I love using this food flask for warm, comforting lunches when I’m out and about. It feels so much better than relying on grab-and-go food, and I know my meals stay fresh without any need for plastic.” - Georgie x
Explorer Flask Duo: for days out
Vacuum insulation keeps drinks piping hot or ice cold for 24 hours. Two double-walled 200ml stainless steel cups screw onto the top and bottom, so you can share a drink anywhere, and the design is 100% leak-proof.[2]
“This flask is amazing for keeping drinks at the perfect temperature, whether I’m out with the kids or on a busy day. I love knowing I’m avoiding plastic bottles while having something so reliable by my side.” - Georgie x
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Which one should you choose?
💖 For plastic-free packed lunches. The Stainless Steel Lunch Box.
💖 For hot meals on the go. The Food Flask.
💖 For hot drinks on walks and days out. The Explorer Flask Duo.
💖 For bigger appetites. The large Stainless Steel Lunch Box, with its internal divider.
Care tips
💖 Pre-heat or pre-chill. Fill a flask with hot or cold water for a few minutes first, then empty it and add your food or drink.
💖 Check the label. Not every piece is dishwasher- or microwave-safe, so follow each product’s care guide.
💖 Never microwave steel. Stainless steel can’t go in the microwave, so warm food at home and pack it in the Food Flask instead.
Why I avoid storing food in plastic
This is a personal choice for our family. I simply prefer our food to sit in stainless steel or glass rather than plastic, especially warm food and drinks.
Good stainless steel also lasts for years, which means fewer things to replace and less waste overall. That’s the kind of swap I love.
Your questions, answered
Do I buy from Glowing Healthy?
No. Each Shop button takes you to Healf UK, where you buy directly.
Is there a discount?
There isn’t a Black+Blum offer I can confirm through my links right now, so I haven’t listed one.
Is the lunch box oven safe?
Yes. The Stainless Steel Lunch Box is oven- and freezer-safe.[2]
How long does the Food Flask keep food hot?
Up to 6 hours hot, or up to 8 hours cold.[2]
Who makes Black+Blum?
A London design studio co-founded by Dan Black and Martin Blum.[1]
Shop the Stainless Steel Lunch Box
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Sources:
[1] Black+Blum, About us.
[2] Healf UK, Black+Blum product pages, linked from the Shop buttons.
Looking for something else? Browse all the brands I stock, A–Z
