These are Women's High Heel Platform Pump Sandals with an Ankle Strap, Open Toe design, and Chunky Heel, perfect for parties and special occasions. They have a Buckle closure and the upper material is Synthetic Leather and Rubber. The heel style is Open Toe Chunky Heel with an Ultra High heel height. Ideal for weddings and parties, these stylish slingback sandals are available in US sizes 6 to 11.