In bestowing a distinct character and identity Guru Gobind Singh Ji let it be known that the artefacts that he was offering the Khalsa were not mere whims of fashion but were integral to the Khalsa Rehat and Life. His command to the Khalsa was, "Rehat pyari mujh ko, Sikh pyaraae nahin". It was the Sikh's life and conduct that were important; calling oneself Sikh is not enough to become a Sikh!
Guru Ji commanded that the Khalsa will be known for they will bear the stamp of the Guru by wearing on their person the Five Kakaar: Kesh, Kanga, Kirpan, Kachera, Kara.