Dr. Martens Rosyna Flats in Black. - size 9 (also in ) Dr. Martens Rosyna Flats in Black. - size 9 (also in ) Leather upper with oil-resistant rubber sole. Slip-on styling. Heel measures approx 1.5 H. DMAR-WZ224. R21450001. When the Dr. Martens boot first catapulted from a working-class essential to a counter-cultural icon back in the 1960s, the world was pre-internet, pre-MTV, pre-CD, pre-mp3s, pre-mobile phones. Hey, they'd only just invented the teenager. In the years before the boot's birthday, 1st April, 1960, kids just looked like tribute acts to their parents, younger but the same. Rebellion was only just on the agenda for some - for most kids of the day, starved of music, fashion, art and choice, it was not even an option.