When the weather turns colder, there's little in life that sounds quite as appealing as the phrase ‘duvet coats’. While taking your actual duvet into the office may well be frowned upon – not to mention the faff it would cause while cramming yourself onto the Central Line at 8:30am – there's certainly no rule against securing yourself a winter coat that does the same job. But it's not all-substance-no-style. Sure, the duvet coat may once have been reserved solely for the wardrobes of arctic explorers and Mr Arsène Wenger, but there's no denying that the look has had a real revival in the world of fashion and is now being worn and loved by many of the world's chicest dressers. Whether that renders Arsène a certified style icon or not remains to be decided… Exactly what they say on the tin, duvet coats are often long in length (beyond knee, even) and made from layers of padding and insulation which, when wrapped around you, could genuinely be mistaken for bedding.