Kachera:

Underwear (Kachera or Kacha) is regarded as a symbol of chastity and honorable character. It is made of cotton and has cord string much like under shorts. Practically it covers the body and ensures a Sikh is always ready and dressed modestly, and allows unembarrassed movement in times of action. It is also easy and comfortable to wear when at rest. it serves as a mark of readiness and agility. Kachera is cotton underwear with cord string worn much like under shorts.