Ankle Strap Block Heel Leather Ankle Strap Block Heel Sandals Jones Bootmaker M&S 50+ Leather Ankle Strap Block Heel Sandals Leather Ankle Strap Block Heel Sandals Dune London M&S. These ankle strap block heel sandals feature a strappy silhouette and a mid block heel for added comfort. The outer material and lining are both made of durable polyurethane, while the outer sole is made of TPR for increased grip. The pin buckle adjustable ankle strap and triple tubular straps provide a secure and stylish fit. These sandals are Made In China.