Patent ID: 8122614

Claim:
A shoe comprising a shoe upper and an outsole connected to the shoe upper; two recesses in the shoe upper, one of each of the two recesses positioned only on each side of the shoe upper in an ankle region of the shoe upper, each of the two recesses extending through the side of the shoe upper; a heel shell which at least partially encloses a heel of a person, the heel shell interchangeable in the shoe upper, the heel shell extending along each side of the shoe upper in the ankle region; an insole extending from the heel shell and fitting within the shoe upper, the insole has a protrusion extending towards the ground, the heel shell and the insole are formed in one piece; two horizontal protrusions on the heel shell, one of each of the two horizontal protrusions positioned only on each side of the heel shell opposite the side of the upper shoe in the ankle region; and one of each of the two horizontal protrusions of the heel shell fitting in one of each of the two recesses in the shoe upper to secure the heel shell in a form fitting manner in the shoe upper.