An interchangeable heel for a shoe wherein the interchangeable heel includes a removable heel sleeve and a heel post which is mounted on the shoe wherein the heel sleeve is releasably mounted on the heel post by an opposed lock mechanism which includes a catch mechanism on one side of the interchangeable heel and a biasing mechanism on an opposite side of the interchangeable heel wherein the biasing mechanism includes a biasing member which is provided on the heel post wherein the biasing member is arranged to engage the removable heel sleeve; a shoe having the interchangeable heel; and a removable heel sleeve for use in the interchangeable heel according to the invention.