Second-hand Proenza Schouler black sandals. Main material patent leather. Size 39. Women's collection. Very good condition. Proenza Schouler x Birkenstock. Reference: 028550204. Condition: Excellent. An excellent item will have been worn a couple of times and will be in almost pristine condition as it has been extremely well maintained. May show slight wear such as scratches or wear on the edges from being used but will have no defects.