Melissa fux patent leather flats with Almond toe, Dual vamp adjustable buckle straps, and Slip-on Lightly padded insole new in box. Why should you purchase Melissa shoes? Melissa shoes are made from a unique, patented plastic material called MELFLEX™, a form of PVC that provides improved elasticity, impermeability and resistance. It is hypoallergenic, odourless and 100% recyclable. Melissa plastic shoes are environmentally friendly as they can be easily disassembled and recycled.