Free People Hybrid Heel Boot in Black. - size 37 (also in ) Free People Hybrid Heel Boot in Black. - size 37 (also in ) Leather upper with man made sole. Heel measures approx 3.5 H. Multi strap detail. Back zip closure. FREE-WZ11. F875A013. Free People invokes a spirit of femininity and creativity. Throughout their line of sweaters, tees, dresses and more, each piece incorporates a high level of quality and originality that reflects their adventurous it girl. With all that's constricting in the world today, Free People says your clothes don't have to be. Be yourself, be creative, be free.