ARTILECT Halfmoon Bio Pullover £100

This is a fleece rather than a double-wall insulator like most of the entries here – but it earns its place because it’s easily as warm as a lightweight insulated jacket. It’s made with 100% recycled PrimaLoft Bio fleece, which offers exceptional bulk-free warmth but with breathability built in too. Plus you get well-placed storage pockets, and the pullover is easy to care for on a low-setting wash. artilect.studio