Style and comfort haven’t always been the sartorial yin and yang they are today. In times past, achieving untold levels of cosiness entailed little more than throwing on some ropey old sweats and, naturally, a free T-shirt you got at fresher’s week. Fine for slobbing about the house in, but hardly acceptable for entering the outside world, even if it’s just for shuttling between home and the supermarket to load up on more potato-based snacks.