These camel active classic shoes collection by the name of REVOLT are definitely an eye-catcher. Here's what we can gather about the slip-on shoes : Upper Material: The upper part of the shoe is made of Waxy Nubuck Leather, which is a type of leather that has been treated with a waxy coating to give it a soft, matte finish. Lining: The inside of the shoe, which comes into contact with the foot, is lined with Fabric. Insole: The insole, which is the layer that provides cushioning and support for the foot, is made of HRS (Highly Resilient Silicone), which is a type of PU (Polyurethane) material. Outsole: The outer sole of the shoe, which contacts the ground, is made of Rubber. Overall, these shoes appear to be a comfortable and stylish option with a focus on durability and traction.