Strings called kobineri, which were made from traditional Japanese paper, were official kakeo, but kumikake (strings made from twine) were also used informally only when Imperial sanction was given, and this kumikake type was developed by the Asukai family, who was well known for kemari (a game played by aristocrats in the Heian period).
懸緒は和紙製の紙縒（こびねり）が正式で、蹴鞠で知られる飛鳥井家の考案で組み紐を使う組懸（くみかけ）が勅許を得たもののみ略式に使われた。