The best trail running jackets of 2023 reviewed

In a tight-fought battle, it’s the fine detail that really makes the difference. This jacket is light, amazingly breathable yet the finish quality is such that if you wish to venture onto an exposed ridge in howling wind and rain, having cruised through temperate conditions to get there, well then, this beauty is what you’re looking for.

Montane as a business specialises in creating kit for the top of the mountain at the same time understanding what us everyday types require. Packable, able to withstand anything our lovely weather wishes to throw as us, yet if you so desire it’ll work perfectly around the park, although shame on you if that’s the only location you take this jacket.

No jacket test is complete without highlighting racing requirements and its specialist needs; by that we mean, light and packable but capable of handling nasty conditions. So much depends on what looks at first glance like a flimsy piece of kit but is actually rammed with tech, hence the slightly high price.

Allow the numbers to do the talking: exceptional breathability, with a rating of 70,000 B-1, and a superb waterproofing rating of 20,000 HH (Hydrostatic Head), which is on par with many hiking jackets. Plus, of course there are fully taped seams to ensure you pass mandatory race kit requirements. Race ready? You bet.

Let’s start with the tech spec: it’s made with proflex three-layer recycled polyester stretch knit fabric and a polyurethane membrane, which weighs in around 270g. In other words, it’s waterproof and breathable! It has a 10,000 HH/mm rating making it UTMB compliant (always a useful guide even if that’s not on your radar) and that in turn means it can cope with both extreme effort and extreme weather. Soft to the touch, nice to wear and it fits well. And, for something as high tech as this, the price is magnificent.

This jacket is all about fit. Adidas use body mapping to vary their Windweave material’s thickness depending on the performance required. That means it’s well insulated where you need it, but ultra-breathable where you don’t.

It's a slim fit and features a half-zip. It's practically unnoticeable to wear, meanwhile the PFC-free water-repellent finish helps keep you protected from the elements.

This is an ideal jacket for those summer runs when you think the UK weather might greet you with a sudden shower. It's ultra-lightweight and can cope with light rain or wind, and also folds in to its own pocket, which includes an elastic belt for easy carrying around the waist. Fit-wise, this jacket actually feels more like a long sleeve top and certainly doesn't restrict movement.