Why We Chose It: Excellent insulation, functional design features.
It’s probably fair to say that Jöttnar aren’t a particularly well known brand, not compared to the likes of Arc’teryx or Rab anyway. But they deserve to be up there with the big boys, and probably will be eventually. They make seriously good kit – we haven’t come across a duff product from them. And they’ve hit the bullseye again here.
This is a very good synthetic insulated jacket, good enough to convert even the most diehard fans of the down filled variety. Quite simply, it’s just really warm without being bulky and heavy. It’s probably the best synthetic insulated jacket we’ve come across recently actually. Our editor, Will, wore it during a six-day backpack along the Beacons Way during February and says that he was snug the whole way. “Even when it got wet in the rain, that snugness never disappeared” – a very handy attribute.
“As with the rest of Jöttnar’s products, it’s made with UK mountaineering in mind”
The insulation is called Thermolite, and it’s very similar to PrimaLoft, providing that light, lofty and breathable feel to mimic down. It’s rated at 100g/m² which is on the heavier, warmer end of the scale (for scale, the Arc’teryx Atom LT uses 60g/m² and their Atom AR uses 120).
It uses a tough outer fabric as well. Much, much tougher stuff than you’d find on any down jacket. This is made from a mix of nylon (89%) and PU (11%) with a micro ripstop construction and a 20 denier strength. There’s a slight bit of stretch to it which will make it less likely to tear when it snags on anything.