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Metal 0.4 L Stainless Steel Isothermal Hiking Bottle

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Model: 8358350

Product Features

A photo of the Metal 0.4 L Stainless Steel Isothermal Hiking Bottle in use

Metal 0.4 L Stainless Steel Isothermal Hiking Bottle is designed for hikers wanting to keep their drinks hot or cold.

Simple, robust, highly insulating bottle; reliable "quarter-turn" cap; beaker included / 0.4 L.


Starting temp. 203°F: 169°F after 6 hrs, 145°F after 12 hrs, 118°F after 24 hrs.

Easy to use

Enables you to pour by partly unscrewing the top. Cup included. Stainless.

Easy to maintain

Easy to clean thanks to the unscrewable top. Stainless steel inside.


Double wall construction in18/8(304)stainless steel with air gap between the two

Product Customer Reviews

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Metal 0.4 L Stainless Steel Isothermal Hiking Bottle,dark grey
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Looks great

Nice looking, loved the colour hence bought it.

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Just the right size to fit into a small day sack

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Excellent flask

This flask is great value. I’d definitely recommend


Good for kids

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fantastic flask

This flask is quite simply fantastic. I have used it daily for 3 months. I have the plain stainless one as reviews said that the colour can chip on the other versions. I considered buying an official Thermos but so glad I went with this as it meets my needs and is much cheaper. I use it exclusively for tea and it is piping hot for 3-4 hours, hot for 6 hours. Keeping it as full as possible keeps the liquid hot (no/lack of air gap). My routine: preheat flask w/boiling water, wait up to 5 min, empty out, add milk then add boiling water, add teabag, stir occassionally w/chopstick/non-metal implement, remove teabag after 5 mins, secure lid. Every 2 months I fill the flask with boiling water and a dishwasher tablet and leave for 2 hours, then rinse with a little rinse aid and cold water. This removes all tea stains and makes your flask sparkle.

Nice product by means of design and quality

It's good product to keep hot water as hot for hours and cold water as cold. But the price should be a bit

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not good

Very nice product

Sporty look very useful

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Very nice


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Insulated hiking bottle

Great light weight small flask that holds enough coffee for you and a friend when you reach the summit.

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Stainless Steel insulated hiking bottle

indispensable bottle that kept my tea hot for 6 hours. Awesomely and surprisingly useful when climbing Yarra Valley Mounts :)

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Item is very useful and portable, quality being ma


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Used in during trekking in cold climates. Hold up really good

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Good product

Keep the warmth. Used in trek to gaumukh.

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Additional Product Information



  • 100%


  • 25% Stainless steel
  • 75% Polypropylene


  • 100% Silicone

Advice to optimize the performance of your isothermal bottle

Fill bottle with boiling water for 5 minutes. Then replace the water with your beverage. Close bottle. The fuller the bottle, the better it is at keeping the contents hot or cold.


By partially unscrewing the cap, you can pour the liquid easily, avoiding fully opening the cap, which would reduce the isothermal performance. The included cup is screwed onto the bottle for easy transport.

Care instructions

Wash by hand, then rinse with clear water and leave to dry with the cap open. The bottle can be put in the dishwasher, but do not put the stopper or cup in.

First use

Rinse the entire product 3 times with clean water before first use.

Materials and regulations

Our products and materials meet the food-contact standards in effect. They do not contain Bisphenol A (BPA) in accordance with the French regulations in force.

Weight and dimensions

Volume: 0.4 L Dimensions: Ø 2.8" x 8.8" Weight: 10.2 oz Available in: 0.4 L/0.7 L/1 L/1.5 L



Product testing

Our isothermal products are tested according to the same protocol: Water at 203°F is placed in the product, which is then closed. We then measure the temperature drop of the water after 6, 12 and 24 hours.

Storage instructions

Wash and dry before storing. Store in a clean, dry place.

Care instructions

Hand wash, do not put in a dishwasher. Rinse in clean water, then leave to dry with the cap open.

Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

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    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual