Latex is a chemical substance which is used to create rubber.
Natural Latex is obtained from the sap of certain plants and can be later vulcanized and finished into a variety of products.
Latex materials are known to have many applications especially in the footwear industry where they can be used to make shoe insoles and outsoles to add flexibility and extra cushioning.
About Slingbacks:
Slingbacks are a type in shoe in which the heel is exposed yet is contained or secured by a strap that sits above the heel around the ankle.