permanent press

/ˈpɜrmənənt prɛs/
adjective
  1. Describing a fabric or clothing that has been treated to resist wrinkles and hold its shape after washing.
    • I bought permanent-press shirts so I don't have to iron them.
    • These permanent-press sheets come out of the dryer looking smooth.
    • Many work uniforms are made from permanent-press material for a neat appearance.