last month
Its great would be better
Its great would be better if zero plastic completely
Thomas D.Verified Buyer
Free delivery
(10)
Explorer Flask Duo
€50.48
Trusted Shops certified1
Due to high demand: only limited stock remaining in the EU warehouse
Trusted Shops certifiedProduct description
Key Benefits
- Keeps drinks hot or cold for 24 hours.
- Includes two durable steel cups.
- Leak-proof design for hassle-free use.
- Convenient carry strap for easy portability.
- Dishwasher safe for easy cleaning.
The Explorer Flask Duo delivers all-day temperature control with vacuum insulation that keeps drinks piping hot or ice cold for 24 hours. Perfect for hikes, beach days or mountain trails, it pairs durable construction with smart features built for the outdoors. The reinforced steel body ensures lasting reliability, while the 100% leak-proof design lets you pack it worry-free.
Each flask comes with two double-walled stainless steel cups that screw neatly into the top and bottom, offering 200ml capacity per cup and a plastic-free drinking experience. The wide base keeps each cup steady on uneven ground, while a silicone gasket prevents drips when stored.
A thick nylon strap makes it easy to carry or pour on the move, and the steel cap lid includes a smooth-pour mechanism that minimises spills and retains heat. Both the flask and cups are dishwasher-safe, making clean-up quick and easy after any adventure.
Specifications:
1 L Capacity
Materials: 304/18-8 Stainless Steel, Silicone, Nylon and Polypropylene
BPA-Free
Dishwasher-Safe (Remove Strap)
Weight: 745 g
Dimensions: 9.7 × 25.8 cm
1.4 L Capacity
Materials: 304/18-8 Stainless Steel, Silicone, Nylon, Polypropylene and Vegan Leather
BPA-Free
Dishwasher-Safe (Remove Strap)
Weight: 870 g
Dimensions: 10.10 × 30.4 cm
Why Black+Blum is Healf
Every Black+Blum purchase contributes to positive change. As part of the 1% for the Planet initiative, the brand donates 1% of every sale to organisations tackling food waste. These efforts support over 375 community partners, including food banks and soup kitchens, redistributing meals to those in need while reducing greenhouse gas emissions from landfill waste. Plus, their innovative products also help reduce food waste at home, making meal-prepping and storing leftovers more sustainable and convenient.
Founded by Dan Black and Martin Blum over 20 years ago, Black+Blum is a UK-based brand known for innovative, eco-conscious food containers, drinkware, and accessories. Designed with reuse and sustainability in mind, each product is thoughtfully crafted in-house using durable, eco-friendly materials where possible. With over 25 global design awards and a presence in 60+ countries, Black+Blum blends style and function to inspire sustainable living and create products people love to use and proudly own.
With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.
Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
Founded by Dan Black and Martin Blum over 20 years ago, Black+Blum is a UK-based brand known for innovative, eco-conscious food containers, drinkware, and accessories. Designed with reuse and sustainability in mind, each product is thoughtfully crafted in-house using durable, eco-friendly materials where possible. With over 25 global design awards and a presence in 60+ countries, Black+Blum blends style and function to inspire sustainable living and create products people love to use and proudly own.
With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.
Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
Suggested use
To clean the bottle:
Wash thoroughly with hot soapy water before using, but do not fully submerge in water. Wash regularly to keep clean and avoid odours. Store with the lid off and make sure you allow it to dry thoroughly after washing.
Remove the strap and lid before dishwashing.
To remove stains or smells:
Add one teaspoon of bicarbonate of soda and mix with hot water. Leave overnight with the lid off and then clean thoroughly. You can also try replacing bicarbonate with vinegar, but wash thoroughly afterwards with soapy water to remove any taste or smell.
Note: This design is not microwave-safe and should never be used in a microwave.
Wash thoroughly with hot soapy water before using, but do not fully submerge in water. Wash regularly to keep clean and avoid odours. Store with the lid off and make sure you allow it to dry thoroughly after washing.
Remove the strap and lid before dishwashing.
To remove stains or smells:
Add one teaspoon of bicarbonate of soda and mix with hot water. Leave overnight with the lid off and then clean thoroughly. You can also try replacing bicarbonate with vinegar, but wash thoroughly afterwards with soapy water to remove any taste or smell.
Note: This design is not microwave-safe and should never be used in a microwave.
Reviews
- 2 months ago
Another quality product from black
Another quality product from black + blum. Expertly designed and engineered, keeps liquid hot forever! The two cups which are attached to the flask are a game changer. Well done.
Jonathan D.Verified Buyer - 3 months ago
Beautiful - i smile every time i look at it and it is definitely not style over function. It is perfect and has been used multiple times already - love it 😊
MrsVerified Buyer - 3 months ago
An excellent sturdy flask for
An excellent sturdy flask for my outdoor ramblings, perfect for sharing a cuppa with a mate on a walk
Sam W.Verified Buyer - 4 months ago
The flask is great quality
The flask is great quality and solid construction. Love the two cup design, I have found it holds heat extremely well, my tea tastes great when poured. Easy to clean after a good day out on the beach.
Derek G.Verified Buyer - 5 months ago
The flask is excellent, kept
The flask is excellent, kept our coffee hot all day so would definitely recommend. The only issue is that if using in the car the cups are too big for holder
Anne B.Verified Buyer
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Healf has impressed me with its comprehensive approach to wellbeing. Their commitment to natural ingredients and cutting-edge technology is evident. From vitamins and supplements to healthy snacks and cooking essentials, they've curated a diverse range of options to cater to various health needs.
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If you're serious about wellbeing, you need Healf. Their products are top-tier and the customer service team has been super attentive!
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Healf is one of the best wellbeing websites I've come across. It's nice to know that they thoroughly check the products they sell so you know you are getting good quality stuff. Highly recommend.
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The best health and wellbeing website in the UK. The range of products is fantastic, even on hard to reach USA products. I love the subscription service too. I'd be lost without this website.
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Healf isn't just another wellbeing brand. They really get it. The products are fantastic, and the support is always so personal and genuine!
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Healf have a great range of wellbeing products not available elsewhere in the UK. They are competitively priced as one-off, but even better if you take up the 'subscription' which is super flexible too. I'd have no hesitation in recommending Healf.
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It's the only place I get really decent health and wellbeing brands, particularly US brands. I've bought a Pvolve set, lots of Skinny Confidential stuff, Thorne supplements etc., the really great stuff that's impossible to get otherwise.
Dillon Jagatia
A comprehensive approach to wellbeing
Healf has impressed me with its comprehensive approach to wellbeing. Their commitment to natural ingredients and cutting-edge technology is evident. From vitamins and supplements to healthy snacks and cooking essentials, they've curated a diverse range of options to cater to various health needs.
Jesse Hansen-Bartel
Top-tier products
If you're serious about wellbeing, you need Healf. Their products are top-tier and the customer service team has been super attentive!
Mayah
One of the best wellbeing websites I've come across.
Healf is one of the best wellbeing websites I've come across. It's nice to know that they thoroughly check the products they sell so you know you are getting good quality stuff. Highly recommend.
Lydia Free
The best wellbeing website…
The best health and wellbeing website in the UK. The range of products is fantastic, even on hard to reach USA products. I love the subscription service too. I'd be lost without this website.
Alex
Amazing!
Healf isn't just another wellbeing brand. They really get it. The products are fantastic, and the support is always so personal and genuine!
Janet
Great products, service, and customer support
Healf have a great range of wellbeing products not available elsewhere in the UK. They are competitively priced as one-off, but even better if you take up the 'subscription' which is super flexible too. I'd have no hesitation in recommending Healf.
S Jones
I love Healf
It's the only place I get really decent health and wellbeing brands, particularly US brands. I've bought a Pvolve set, lots of Skinny Confidential stuff, Thorne supplements etc., the really great stuff that's impossible to get otherwise.
Frequently asked questions
How do we curate our products?
Every product undergoes our Healf Curation Process. With it, you can shop confidently knowing that every item has been tried and tested before it reaches you. Our Healf Curation Process includes three key steps: Brand Discovery, Expert Validation, and Community Testing. Through these, we assess quality, ingredients, effectiveness, and more, ensuring that every product empowers your wellbeing.
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The Healf Source offers detailed insights into different aspects of wellbeing, as well as guidance, research, recipes, and more to help you invest in your personal wellbeing journey. You can also subscribe to our weekly newsletters for the latest updates at Healf and in the wellbeing industry. Subscribe via the sign-up block at the bottom of this page.
How can I find out more about the ingredients in a product?
We love people who check ingredients as carefully as we do, so you'll find detailed information about the ingredients used on every product page (where applicable). If you see something you'd like to flag with us or have additional questions, please don't hesitate to get in touch—we'd love to hear from you.
Healf Curation Process™
Every product undergoes our rigorous Healf Curation Process, ensuring you are always getting the best when it comes to your wellbeing.
The DiscoveryOur approach keeps us at the forefront of wellbeing. With our global network of health professionals and AI-powered trend analysis, we curate the leading supplements, tools, and tech that pioneer the industry.
Expert ValidationEach product at Healf is carefully examined by a panel of industry specialists—including dieticians, personal trainers, psychologists, and sleep experts—to ensure it meets our high standards for quality, efficacy, and ingredient formulations.
Community TestingBy collaborating with a dedicated group of customers who test and review each product, we ensure that only those truly beneficial to your wellbeing are offered here at Healf.
