When is a coat not just a coat? When it's a structural marvel too. Gone are the days when outerwear was big and bulky, now we have Hei Hei and its range of flattering jackets. The Japanese brand is spoiling us with draped trenches, knitted cape styles and classic parkas. Keeping things simple and as soft as ever, there's now no good reason we can think of to leave the house feeling anything less than toasty.