Bio Barracuda slipper made of gray wool. Belt-shaped ornament made with black synthetic hood with silver buckle. Anatomic insole made of soft cork. Ice-colored EVA sole. This product is #ecofriendly #animalfree Upper material: wool Insole: synthetic Outsole: EVA The model we use to produce the slipper is anatomic, being a bit wider than other types of footwear. If you hesitate between two sizes, we recommend that you choose the smaller one.