Crocs Echo Clog The Echo Collection is for those who want comfort without compromising their look. This fully moulded clog is anything but conformist, with bold sculpting and sport inspiration that keeps streetwear at its core. Fastening:Slip On Material Composition:Other Materials/Other Materials/Other Materials Incredibly light and easy to wear. Fully moulded Croslite upper and foundation. Water-friendly and buoyant; weighs only ounces. Ventilation ports add breathability and help shed water. Easy to clean and quick to dry. Heel pad on back strap for extra comfort. Refer to Unisex Size Conversion. Product Sole displays US Size not UK.. Roomier fit than Crocs Classic Clogs.