A fukusa prevents damage to mizuhiki (decorative Japanese cord made from twisted paper) of a noshi envelope or prevents the envelope from wrinkling, and shows respect for the receiver's feeling and ritual events as well as empathy to share joy and sadness.
熨斗袋の水引がくずれたり袋が皺になることを防ぐ事や先方の心中や祭礼を重んじ、喜びや悲しみを共にする気持ちを表している。