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Hydration

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  • EASYFLASK TUBE 600ml

    Hydration system

    50 g

    Regular price €19,90 EUR
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  • WATER POCKET 1.8 L

    Hydration system

    155 g

    Regular price €29,90 EUR
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  • WATER POCKET 1.2 L

    Hydration system

    150 g

    Regular price €24,90 EUR
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  • Your 3rd flask free

    We sell 100% trail running gear, designed for finishers: bags, jackets, shirts, and ultra-light accessories, tested in the field. Made to support you from the first mile to the last, on all paths.
  • PRESS-TO-DRINK 750ml

    Hydration system

    100 g

    Regular price €19,90 EUR
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  • SET OF 2 FLASKS 300ml

    Hydration system

    40 g

    Regular price €14,90 EUR
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  • WATER FILTER

    Hydration system

    35 g

    Regular price €24,90 EUR
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  • EASYFLASK TUBE 350ml

    Hydration system

    45 g

    Regular price €14,90 EUR
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  • EAZY ECO CUP

    Hydration system

    9 g

    Sale price €7,90 EUR Regular price €9,90
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  • EASYFLASK 600ml with FILTER

    Hydration system

    50 g

    Regular price €39,90 EUR
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FAQ

Why is hydration essential in trail running?

When trail running, you sweat a lot, especially in the mountains, in the heat, or during long efforts. Proper hydration helps regulate body temperature, prevent cramps, heat strokes, and drops in performance. Even slight dehydration can have an immediate effect on your energy level and clarity. It is therefore essential to drink regularly, before feeling thirsty, from the start of your outing.

What is the difference between a soft flask, a water bladder, and a hard bottle?

- The soft flask is compact, light, empties gradually, and reduces jolts. It is perfect for trail vests: easy to slip into front pockets, with or without a straw.
- The water bladder is worn on the back and allows carrying a larger volume (up to 2 L), with a tube accessible while running. Ideal for long outings without refreshment points.
- The rigid bottle is easy to use, sturdy, and often used as a supplement or on short hikes.
The best approach is often to combine flasks at the front and a water bladder at the back depending on the duration and heat.

How much water should you plan for a trail run?

On average, plan for between 500 ml and 1 litre of water per hour of effort, depending on the temperature, intensity, and your level of sweating. In summer or in the mountains, it is better to be prepared and not set out under-equipped.

Raidlight flasks and bottles are available in several sizes (300, 350, 600, 750 ml), to suit your needs. Our bags/vests are compatible with water bladders up to 2 litres. Some models include filters or are compatible with filtering caps to draw from springs or streams during your run.

Are Raidlight flasks and pockets compatible with all bags?

Yes, the Raidlight soft flasks are universal and fit most trail vests on the market. Their wide cap or long straw makes them compatible with most quick-access systems. Our water bladders are also standardized (classic valve, detachable tube) and fit easily into most hydration packs.

If you use a Raidlight pack, the compatibility is perfect. Otherwise, be sure to check the compartment dimensions to ensure a good fit.
All our vests come with the suitable flasks.

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