Abstract: A closure system including a body for receiving an object. An activation device is connected to a base structure, and is activated by placement of the object within the closure system. The activation device operates between a raised or depressed configuration, depending on the position of the object within the closure system. A tightening mechanism is responsive to the operation of the activation device. When the activation device is in the raised configuration, the tightening mechanism is loose. When the user depresses the activation device, the tightening mechanism tightens around the object. A movable displacer in a locking device for locking the configuration of the closure system and removably insertable into a recess helps better control tension within the tightening mechanism and improves comfort by disengaging the activation device from the tightening mechanism. A lace lock for locking a lace is disclosed. A lace tension distributor is also disclosed.