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Explorer Flask Duo - Image 1
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(10)

Explorer Flask Duo

£42.46£49.95

1L

In stock. Next day delivery available.
Healf Zone members get free next day delivery on all orders.

1
Product 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.
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.

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Reviews

  • last month

    Its great would be better

    Its great would be better if zero plastic completely

    Thomas D.Verified Buyer
  • 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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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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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.