The Naot Calluna is a fashionable ankle boot , it stands out with metallic and radiant details on stylish water resistant leather . This comfortable, yet stylish boot features a side zip for increased accessibility. Beyond glamour, the Calluna has Naot's removable, anatomic cork & latex footbed, which is wrapped in pampering suede and molds to the shape of the foot with wear. The Koru Collection features a polyurethane sole which is extremely lightweight, durable & slip resistant. This collection uses a hand-sewn stroble construction making it strong and extremely flexible. Medium Fitting. Removable Innersoles.