Shoe having an interchangeable heel

A shoe having an interchangeable heel, comprising:

• a sole;
• a receiving recess in a heel area of the shoe below an insole of the sole;
• a heel comprising a key on a top side of the heel configured to engage the receiving recess;
• the key comprises a first key side opposite a second key side, the first and second key sides each comprise a key first engagement portion and a key second engagement portion and a key recessed region between the key first engagement portion and the key second engagement portion;
• the receiving recess comprises a perimeter, the perimeter comprises a first receiving side opposite a second receiving side, the first and second receiving sides each comprise a receiving first engagement portion and a receiving second engagement portion and a receiving non-engagement recess between the receiving first engagement portion and the receiving second engagement portion;
• and,
• the key movable within the receiving recess between a released position and an engaged position, in the engaged position each key first engagement portion is engaged with one of the receiving first engagement portions and each key second engagement portion is engaged with one of the receiving second engagement portion to join the key to the perimeter and the heel to the sole, in the released position each key first engagement portion is aligned with one of the receiving non-engagement recesses and the key is removable from the receiving recess.