Bought the fluorescent yellow to be seen on dog walks, in dark car parks etc with no slogans emblazoned across my back. I am size 14 but bought Large to get several layers underneath - it fits comfortably but does not feel too big or bulky. It is a very light and warm gilet and easily covers the vulnerable lower back area on a 5'8 person in the tall version. Washes brilliantly on cold with a warm tumble dry. Good price in sale so have ordered two more.