The Birkenstock Zermatt Rivet 1014932 are the first slippers with a fully removable sole. They feature an ergonomic sole with a standard fit, advising you to take your usual size. The upper is crafted from soft anthracite grey wool, ensuring they are very pleasant with immediate comfort. Product details: • Mules • Fastening: slip-on Fabric content and care advice: • Uppers: 100% wool • Lining: 100% wool • Cushioning: 100% cork • Sole: 100% latex • Made in Europe.