On are a Swiss running brand that are growing very, very quickly. In fact, last time we checked they were deemed to be the fastest-growing running brand in the world.
What they’re best known for is their footwear for trail and road running. In case you haven’t already seen them, On have developed innovative outsoles that are lined with what they call ‘clouds’ – essentially U-shaped rubber shock absorbers. Go to any parkrun in the UK these days and you’re guaranteed to see plenty of people wearing them.
But while footwear makes up the core of the brand, they also have a modest collection of runwear with some very decent stuff, particularly this item, the On Weather Jacket.
They describe it as the “perfect companion for when your run gets wild”. It’s that jacket that you can wear continuously in the wind or light rain through winter; or in summer, the one you tuck in a pocket or in your pack to pull out when the conditions close in on you.
The main fabric, a ripstop polyamide, is stretchy and very thin, but it’s able to keep out moisture, mainly thanks to what must be a hefty coating of durable water repellent. On the upper torso, this fabric is layered in flaps like armour plating over a stretch mesh, with the bottom side open to create huge vents that let hot air out, but no wind and rain in.
“Huge vents let hot air out, but no wind and rain in”
There’s more ventilation on the inside of the forearms in the form of a stretch mesh, and while this might be a slightly less exposed area, it does leave that area vulnerable to moisture.