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Trail running pack: Equipment you forget about

Since 1999, Raidlight has been revolutionizing carrying with one obsession: to create the lightest, most stable, and best-designed trail running packs. 190 grams for 12 liters. Freelock system for a perfect fit. Made in France in Chartreuse.

Why is the trail running pack crucial in trail running?

In trail running, your pack is not an accessory. It’s your ally to reach the finish. A pack that bounces at the 40th kilometer, straps that cut into your shoulders, pockets that are inaccessible while running: a single weak link, and it’s abandonment.

For over 25 years, we have tested our packs in the most extreme conditions: UTMB, Marathon des Sables, Diagonale des Fous. 190 grams for 12 liters. Micrometric Freelock system. Trail running forgives nothing. Neither does your pack.

  • 190g

    ULTRALIGHT 12L – Among the lightest on the market

  • 1/5

    Innovations developed and tested in the field

  • 10 000+

    Ultras finishers equipped by Raidlight every year

The 5 criteria that make the difference

1. Ultra-lightweight

Over 100km, every extra gram multiplies by 10. Our trail running pack are the lightest in their category - some models weigh less than 200g - while maintaining the strength and reliability required by the terrain.

2. Absolute stability

The system of lateral micrometric buckles adjusts the hydratation pack to your body shape in real time. Zero bouncing, even at 15 km/h on technical descents. The hydratation pack becomes one with you.

3. Maximum breathability

3D mesh harness, ultra-breathable materials. Optimal sweat evacuation, even under intense effort. Your shoulders and back stay dry, kilometer after kilometer.

4. Smart practicality

More than 10 pockets reachable while running. Front/rear pole holders. Compatible with 2L water bladder. Flasks included. Every detail designed to never slow you down.

5. Made in France

Made in our workshop in Saint-Pierre-de-Chartreuse (Isère) with cutting-edge technologies: laser cutting, heat bonding. Local expertise, impeccable quality.

Exclusive innovation

The perfect fit with micrometric buckles

The problem with traditional backpacks: either too tight (chest compression) or too loose (bouncing). The system solves this dilemma with lateral micrometric buckles that adjust the pack in real time.

How does it work? Two micrometric buckles on the sides allow you to adjust the pack’s width to your body shape and its contents. Empty or full pack, narrow or wide chest: the micrometric buckles adapt in 3 seconds.

Result: absolute stability, zero bouncing, long-lasting comfort. The pack becomes an extension of your body.

What volume for what distance?

From short trail runs to multi-day raids, the volume of your backpack must adapt to your autonomy. Here's how to choose.

  • Bleu

    5-8L: Short trails

    Minimalist, ultra-light. Front flasks, 1-2 pockets. Ideal for short outings and fast competitions: up to 40km.

  • Noir

    12-15L: Medium to ultra trails

    The perfect balance. 190g, 9 pockets, mandatory ITRA equipment. The best-seller for 50-160km.

  • orange

    20-40L: Ultras XXL & raids

    Large capacity, maximum versatility. Over 15 pockets, quiver compatible. 160km+ format.

Our ultra-versatile trail vests

A selection of versatile vests, from 8 to 15L, designed to accompany you everywhere.

Quick outings, ultra-technical or long training sessions: these models cover all terrains and all profiles.

Adjusted volume, long-lasting comfort, stability even when loaded, choose the one that fits your practice, not the other way around.

A table comparing the facets of 4 products
Facet
RESPONSIV 8L
View details
Noir
DYNAMIC 10L
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Noir
ULTRALIGHT 12L
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RESPONSIV 15L
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Price
Price
Sale price €119,90 EUR Regular price €139,90
Sale price €99,90 EUR Regular price €119,90
Regular price €159,90 EUR
Sale price €139,90 EUR Regular price €159,90
Weight
Weight250 g 200 g 190 g 265 g
Pockets
Pockets
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The advantage of the vest
The advantage of the vest
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Made in France
Made in France

Rating
Rating
Color
Color

Frequently Asked Questions

What is the difference between ULTRALIGHT 12L and RESPONSIV 15L?

The ULTRALIGHT 12L and RESPONSIV 15L are two trail vests designed for long outings and ultra-trail, with a different approach depending on the level of self-sufficiency and the priority given to weight.

The ULTRALIGHT 12L is a vest Made in France, developed with a focus on lightness and minimalism. It is aimed at runners who seek a very close-fitting, comfortable, and stable pack, with a micrometric tightening system allowing precise adjustment. Its controlled volume makes it a suitable solution for ultra-trail and long outings when gear is optimized.

The RESPONSIV 15L offers a larger volume and an organization designed to carry more equipment. It is better suited for long outings with greater self-sufficiency, demanding formats, or runners needing extra capacity, while maintaining good stability during the run.

The choice between the two mainly depends on the needed volume, the level of self-sufficiency sought, but also on the priority given to lightness and Made in France.

Is the Freelock system really effective?

Yes. Side micrometric buckles = precise adjustment in 3 seconds. Zero bouncing confirmed by all testers.

Are the hydratation pack suitable for women?

Yes. Raidlight trail vests are designed to fit different body shapes thanks to precise width and tension adjustments, notably through the micrometric tightening system. Some models also come in women-specific versions, with a cut tailored to the female chest to improve comfort, support, and stability during running.

The size guide and product sheets make it easy to identify the model and fit best suited to your body shape.

Can we use a hydration bladder?

Yes. All our bags and vests are designed to be compatible with a dedicated hydration system. Our hydration vests and large capacity bags come with two soft flasks or a rigid bottle, depending on the models. They also have a back compartment compatible with a water bladder, if you prefer this setup, except for the Ultralight 5L. The goal is simple: to allow you to adjust your hydration to your distance, the weather conditions, and your running style, without constraint.

How to store the poles?

Raidlight trail vests include various carrying systems for poles, depending on the model. It is possible to attach them at the back or front of the pack, allowing for quick storage when not in use, while keeping them easily within reach.

The Dynamic 10L notably features a pole holder directly sewn onto the outer back pocket, enabling simple and effective storage during the run. Furthermore, all Raidlight vests are compatible with a quiver for trail poles, offering an additional solution for quick and stable carrying.

All these systems are designed to allow stowing and deploying the poles without removing the pack, so you can stay smooth and focused on the run.