A wearable device configured to selectively provide roller transportation, comprising: a shoe; a plurality of wheel assemblies, each wheel assembly being configured to selectively roll relative to a ground surface about an associated axis of rotation; and a frame connected between the wheel assemblies, the frame comprising a trunk and a plurality of branches extending from the trunk, the trunk comprising a trunk midline plane that is orthogonal to the ground surface, the trunk extending along a forward-rearward direction of the wearable device, wherein each of the branches are configured for connection to at least one of the plurality of wheel assemblies, wherein each of the branches comprise a branch midline plane that intersects the trunk midline plane at an outer angle, wherein at least two of the plurality of branches extend leftward from the trunk midline plane and at least two of the plurality of branches extend rightward from the trunk midline plane, and wherein each of the branches, as viewed from above, comprise a branch endpoint coincident with each of the respective branch midline plane and the respective axis of rotation; wherein at least a portion of the shoe is located vertically higher than at least a portion of the frame when at least one of the wheel assemblies is in contact with the ground surface and the at least one of the wheel assemblies is positioned to selectively roll relative to the ground surface; and wherein at least one of the branch endpoints is misaligned relative to the other branch endpoints in both a forward-rearward direction and a leftward-rightward direction, characterised in that at least a portion of the frame is embedded within the shoe. a shoe; a plurality of wheel assemblies, each wheel assembly being configured to selectively roll relative to a ground surface about an associated axis of rotation; and a frame connected between the wheel assemblies, the frame comprising a trunk and a plurality of branches extending from the trunk, the trunk comprising a trunk midline plane that is orthogonal to the ground surface, the trunk extending along a forward-rearward direction of the wearable device, wherein each of the branches are configured for connection to at least one of the plurality of wheel assemblies, wherein each of the branches comprise a branch midline plane that intersects the trunk midline plane at an outer angle, wherein at least two of the plurality of branches extend leftward from the trunk midline plane and at least two of the plurality of branches extend rightward from the trunk midline plane, and wherein each of the branches, as viewed from above, comprise a branch endpoint coincident with each of the respective branch midline plane and the respective axis of rotation; wherein at least a portion of the shoe is located vertically higher than at least a portion of the frame when at least one of the wheel assemblies is in contact with the ground surface and the at least one of the wheel assemblies is positioned to selectively roll relative to the ground surface; and wherein at least one of the branch endpoints is misaligned relative to the other branch endpoints in both a forward-rearward direction and a leftward-rightward direction, characterised in that at least a portion of the frame is embedded within the shoe.