The present disclosure relates to devices and systems related to a modular leg component for a mobility walker. Namely, a device including a leg component that includes a first surface and a second surface is described. The first surface and the second surface may be constructed from materials with a different hardness from one another. The surfaces are configured to be movable relative one another. For example, at least one of the first surface or the second surface is rotatable about an axis such that in a first configuration the first surface is arranged to contact a ground surface and in a second configuration the second surface is arranged to contact the ground surface.