A device configured to surround a portion of a foot-receiving cavity at a heel region of an article of footwear comprises a control bar having a center segment, a first side arm extending from the center segment, and a second side arm spaced from the first side arm and extending from the center segment. The control bar may include a series of slats. A base supports the control bar and is connected to the first side arm and the second side arm. The control bar is biased to an unstressed position with the center segment a first distance from the base, and elastically bends under an applied force to a loaded position with the center segment a second distance from the base less than the first distance. The device stores potential energy that returns the control bar to the unloaded position upon removal of the applied load.

A bladder for an article of footwear includes a first barrier layer formed of a first material, and a second barrier layer formed of a second material. The first barrier layer and the second barrier layer cooperate to form a fluid-filled chamber having a first fluid-filled segment extending along an arcuate path, a second fluid-filled segment extending from a first end of the first fluid-filled segment to a first distal end along a first longitudinal axis, and a third fluid-filled segment extending from a second end of the first fluid-filled segment to a second distal end along a second longitudinal axis parallel to the first longitudinal axis. The first barrier layer and the second barrier layer may be joined together define a web area connecting each of the first segment, the second segment, and the third segment.