When you’re out and about, cold air plus body heat can equal condensation inside your jacket. To avoid this, choose a breathable modern softshell jacket that will allow excess moisture to evaporate and escape.
Not as daft as it sounds: if you sweat, you’ll get cold when you stop moving. That’s what sweat’s for after all. So, as you warm up, open venting zips or take off a layer or two.
When you stop moving, you stop generating heat. To retain the warmth you’ve built up, a down or synthetic insulating jacket is ideal. Super light and packable, they’re easy to keep stashed in your bag. Long used by mountaineers, they’re just as useful for a quick lunch break.
Eating and drinking is vital for your body to generate heat. A hydration system and a few energy bars and snacks to keep yourself topped up, but on a cold day there’s nothing quite like the ‘mmmmm!’ feeling you’ll get from a hot flask of soup.
Waterproof membranes live on the inside of your clothing and boots. The outside has a water repellent treatment when it’s new, but this will wear off. To avoid being wrapped in a chilly, rain-sodden layer of clammy gear, remember to regularly re-treat your kit.