J'ai trouvé ça :
The hakama has 7 folds in it (5 in the front, 2 in the back) and has the following symbolic meaning:
Yuki - courage, valor, bravery
Jin - humanity, charity, benevolence
Gi - justice, righteousness, integrity
Rei - etiquette, courtesy, civility (obedience)
Makoto - sincerity, honesty, reality
Chugi - loyalty, fidelity, devotion
Meiyo - honor, dignity, prestige
source: sur ce site