Details: Caterpillar Upper : SyntheticLining : SyntheticInsole : Synthetic Sole : Synthetic As long as Moony Mood are the ones making these silver sandals, we'll add them to our shoe collection right away! The design combines a synthetic upper and synthetic sole. So comfortable, these shoes combine the advantages of a synthetic insole and a synthetic lining. With a 9 cm heel, they have it all!