The black Aikido Hakama is made of Polyester-Rayon-Fabric. The hakama is easy to care and machine washable. The Aikido Hakama Kuroi is exclusively made for Aikido24. The seams are reinforced, the himo are extra long and the hakama has a flexible koshita. The pleats are sewn on their inner seams to keep the shape and to make it easier to fold the hakama.