These Missile slides are perfect for your summer wardrobe, offering both style and comfort. They feature an adjustable strap for a personalized fit. This gorgeous black leather version is an essential. Upper Material: Leather - Sole: Synthetic - Fastening: Hook and Loop. These mules have a heel height of 3.5cm/1.5" with a slip-on fastening and a round toe. Uppers: 100% leather. Lining: 100% polyurethane. Cushioning: 100% polyurethane. Sole: 100% rubber.