Barracuda bio sandal with two adjustable buckles made of beige and ocher wool and polyester. Anatomic sole made of soft cork covered with beige synthetic fur. Corrugated ocher rubber sole. Outer material: 90% wool and 10% polyester felt Insole: synthetic Outsole: TR The insole we use to make the sandal is anatomic, being a little wider than other types of footwear. If you are hesitating between two sizes, we recommend that you choose the smaller one.