From Naot:

The Naot Etera is an extremely comfortable sandal with a padded backstrap. This style features a hook & loop closure at the instep and gore at the middle strap. Naot’s removable, anatomic cork & latex footbed is wrapped in pampering suede and molds to the shape of the foot with wear. The Koru Collection features a 1″ polyurethane sole which is extremely lightweight, durable & slip resistant. This collection uses a hand-sewn strobel construction making it strong and extremely flexible.