As I write these words, I am high in the Andes. So, like a premium-rate heavy-breather, let me tell you what I have on: merino base layers by Icebreaker, which regulate your temperature; a remarkably warm Ultra Light Down zip jacket from Uniqlo; and fully breathable and waterproof Gore-Tex trousers and jacket from my favourite outdoorsy brand Patagonia. The key is to buy removable layers that don’t restrict movement or suitcase space. Covent Garden is the place to buy snow gear. Dan is an editor for mrporter.com