Vince Petra Heel in Black. - size 6 (also in ) Vince Petra Heel in Black. - size 6 (also in ) Suede upper with leather sole. Slip-on styling. Heel measures approx 2.5 H. VINCE-WZ88. B8051L5. Founded in 2011, THREE FLOOR was born from a shared desire to provide contemporary, high quality fashion based on clean fluid lines and softly tailored separates. Inspired by fashions elite; bloggers, editors and models off duty; THREE FLOOR centers their look on effortless style and strategic cut outs, bringing a truly innovative approach to detail and silhouette.