These are handmade wings, each hand-attached with hundreds of feathers.
They were designed with both a wearable structure and a sculptural beauty in mind, based on images of angels and symbolic beings. 
These wings, with their soft, three-dimensional feathers spread out in layers, go beyond being a simple prop and become a sculptural object that symbolizes the extension of the body. The silhouette naturally sways according to the wearer's movements, giving them a sense of life as if they were alive and breathing.