No matter your style, there are a few pieces that should always be considered a wardrobe must-have. Among this list is the puffer jacket, the humble winter saviour that embodies an air of insouciance in every thread. It should come as no surprise, then, that Alexander Wang – the master of city-ready nonchalance – has updated its outerwear oeuvre with this decidedly cool iteration.How to wear Harrods: Style with a top, jeans, boots and a top-handle bag.