| CPC A43B 7/1464 (2022.01) | 10 Claims |

|
1. A locking structure for an article, the locking structure comprising:
a bladder including a first barrier element attached to a second barrier element to define a chamber having an interior void; and
a plurality of locking elements disposed within the interior void and each attached to at least one of the first barrier element and the second barrier element, each of the locking elements including an interface surface operable to selectively engage an interface surface of another one of the locking elements.
|