Instinct X10L Hydration Vest and Ergo Quiver 2: A Smart Trail Running Duo

Introduction

Trail running packs and hydration vests have exploded in popularity over the last few years, and they now come in every shape, size, and color from a long list of established running brands. This review looks at two products from French trail running brand Instinct: the X10L hydration vest and the new Ergo Quiver 2 dual pole carrying system. Instinct gear has previously impressed with its build quality and attention to detail, and this pairing set out to test whether that standard holds.

Instinct X10L Hydration Vest

The X10L is a 10-liter hydration vest weighing 297g, available in one size with a generous range of adjustments to dial in the fit for different body shapes. Pricing varies depending on where you look: UK retailers have listed it anywhere from £116 up to £145, while the Instinct website lists it at €140 without bottles or €165 with two soft flasks included.

Construction and Fit

The bulk of the vest is made from a lightweight, highly breathable honeycomb mesh that promises strong ventilation and wicking, and it is genuinely so light you can hold it up to the light and see straight through it. The pockets use a slightly stretchier fabric covered in tiny perforations for airflow.

Fit is where Instinct has put real thought into solving the classic one-size problem. The front closure uses a simplified system with two 20cm sliders, one on each side, so you can slide the buckles up or down to suit your torso before clipping in and adjusting the straps. On top of that, elastic cross-lacing on the sides with auto-lock lets you make micro adjustments on the fly. The vest finishes with reflective detailing for safer nighttime running, and it sits high on the back, feeling secure even when fully loaded.

Storage That Works On the Move

Accessible storage is arguably this vest’s strongest suit. Up high on each shoulder strap sits a small secured zip pocket, ideal for electrolytes or salt tablets, with an emergency whistle inside on a longer cord so it is easier to reach while wearing the pack. Below that, two larger pockets hold the included 600ml soft flasks, which is a step up from the more common smaller flasks and lets you carry 1.2L up front. A solid bungee at the top of each pocket cinches down around the flask lid so nothing slips as you drink.

Below the flask pockets is a clever double-pocket setup: a medium stretch stuff pocket on top with a more secure zip pocket underneath, perfect for gels, bars, gloves, a warm hat, or a head torch you need to grab without stopping.

The back of the vest continues the trend. There is a separate compartment for a hydration bladder with a Velcro loop to keep it secure, a horizontal mesh stuff pocket at the top that swallows a waterproof jacket for quick access when the weather turns, and a good-sized main zip pocket big enough for mandatory race kit such as first aid kits, bivvy bags, and emergency food. Below that sits a three-pocket system with two elasticated stuff pockets on top and a long stuff pocket running along the bottom.

Instinct Ergo Quiver 2 Dual Pole System

The Ergo Quiver 2 takes a refreshingly simple idea: instead of one quiver holding both poles, you get two, one per side. It was designed to make stowing and retrieving poles easier while running at speed, and to spread the weight more evenly across the back of the vest.

Each quiver is built from tough nylon ripstop fabric with EVA padding on the underside, drainage holes at the bottom, and a cord-and-toggle attachment system with a generous loop at the top of each quiver to make locating them easy.

Performance After a Month of Testing

Over roughly a month of use, the vest was taken out seven or eight times, from short efforts with minimal kit to longer fully loaded runs. Build quality lived up to expectations: technical fabrics, solid zips, tidy stitching, and the kind of attention to detail that suggests the vest will last for years. The honeycomb mesh stayed comfortable even over longer periods, and while testing took place in UK winter rather than tropical heat, the breathable construction looks well suited to hot conditions.

There was no rubbing or chafing at any point, which is largely down to the precise fit enabled by the adjustable front sliders and side lacing. The pack sits high and secure on the back even when carrying a lot of gear.

The dual quiver was the standout. Past experience with single quivers has often meant poles tangling together, catching in fabric, and ultimately stopping to remove the pack entirely, which defeats the point of a quiver. With one pole per side, none of those issues appeared: poles slide out and stow away easily while still moving, the weight feels better distributed, there is no clatter of poles knocking together, and the whole setup feels more stable.

Buying Advice

One stress test proved particularly convincing: the full mandatory kit list for a demanding ultra, including a waterproof jacket and trousers, first aid kit, emergency bivvy bag, warm second layer, gloves, hat, head torch, spare batteries, emergency food rations, and spare camera batteries and memory cards, all fit inside the 10-liter vest. It was full by the end, but everything went in.

The quiver system is designed for Instinct vests, but it also attached without difficulty to a Salomon Advanced Skin 12, one of the most popular vests on the market, so it may work for runners already invested in another brand. If you prefer not to use a quiver at all, the X10L itself offers three pole carrying options: up front using the bungees, on the back, or stowed horizontally along the bottom.

The one reservation is the one-size-fits-all approach. Runners come in all shapes and sizes, and sized vests in specific measurements remain appealing. Even so, the adjustment systems here are among the best available, and this is arguably the strongest one-size vest on the market. Instinct has also recently launched in the US, making its range easier to access for American runners.

Conclusion

The Instinct X10L is a thoughtfully designed hydration vest with quality technical fabrics, excellent on-the-move storage, and a fit system that largely solves the one-size problem. Paired with the Ergo Quiver 2, it makes carrying poles dramatically less frustrating than traditional single quivers. For anyone buying a first hydration vest or upgrading a current pack, this combination is easy to recommend.