YSL Saint Laurent Opyum Black Leather Matte Logo Open Toe Heels EU 37.5 US 7.5 This is an authentic pair of SAINT LAURENT Opyum Heeled Sandals size 37.5 in Black. These heeled sandals are crafted of black lambskin leather with textured, matte black hardware YSL logo heels. They feature thin leather crossover toe straps and adjustable buckles at the ankles. They are in excellent condition with minor wear on the outsoles.