A walker comprising: a pair of side frames , each of the side frames having a forward leg and a rearward leg , the forward leg and the rearward leg being joined at their top portions by an upper support member ; and a cross member extending between the forward legs of each of the pair of side frames, the cross member comprising first and second cross member components, the cross member components being foldable relative to one another about a hinge , each of the cross member components being rotatable relative to one of the side frames to permit movement of the walker between expanded and folded configurations, whereby in the folded configuration the side frames are closer together as compared to the expanded configuration and the cross member components are folded about the hinge; characterised in that the hinge includes a locking pin that is movable between a locked position in which the cross member components are prevented from rotating about the hinge, and an unlocked position in which the cross member components are permitted to rotate about the hinge; wherein a pivot housing is disposed at least partially over the locking pin and is operably connected to the locking pin, the pivot housing being pivotable between a first position wherein the locking pin is in the locked position, and a second position wherein the locking pin is in the unlocked position, the pivot housing being connected to the locking pin via a flexible cable , the movement of the pivot housing from the first position to the second position causing the flexible cable to pull the locking pin from the locked position to the unlocked position. a pair of side frames , each of the side frames having a forward leg and a rearward leg , the forward leg and the rearward leg being joined at their top portions by an upper support member ; and a cross member extending between the forward legs of each of the pair of side frames, the cross member comprising first and second cross member components, the cross member components being foldable relative to one another about a hinge , each of the cross member components being rotatable relative to one of the side frames to permit movement of the walker between expanded and folded configurations, whereby in the folded configuration the side frames are closer together as compared to the expanded configuration and the cross member components are folded about the hinge; characterised in that the hinge includes a locking pin that is movable between a locked position in which the cross member components are prevented from rotating about the hinge, and an unlocked position in which the cross member components are permitted to rotate about the hinge; wherein a pivot housing is disposed at least partially over the locking pin and is operably connected to the locking pin, the pivot housing being pivotable between a first position wherein the locking pin is in the locked position, and a second position wherein the locking pin is in the unlocked position, the pivot housing being connected to the locking pin via a flexible cable , the movement of the pivot housing from the first position to the second position causing the flexible cable to pull the locking pin from the locked position to the unlocked position. <EOS>