Helly Hansen Lifaloft Air Insulator Jacket £170

HH launched Lifaloft a few years ago and it quickly became a go-to super-light synthetic insulation option for everyone from Alpinists to Winter Olympians. They’ve now released a refined form called Lifaloft Air, with more air pockets and an open structure, allowing more air to pass through during highintensity activities, but keeping you warm when standing still. This jacket is its flagship, and very fine it looks too. hellyhansen.com