a sock formed of a single layer and having a calf portion, an ankle portion and a foot portion; and

a gaiter coupled to the sock, the gaiter operable between a sock configuration and a gaiter configuration, the gaiter covering the calf portion of the sock in the sock configuration, and the gaiter folded down at least partially over the ankle portion of the sock in the gaiter configuration; and

a transition area between the calf portion of the sock and the ankle portion of the sock;

wherein the foot portion of the sock has a first thickness, the ankle portion of the sock has a second thickness, the calf portion of the sock has a third thickness, and the gaiter has a fourth thickness;

wherein the single layer of the sock has a smaller thickness above the transition area and a greater thickness below the transition area, such that the combination of the third thickness and the fourth thickness is substantially the same thickness as the second thickness, and such that, when the gaiter is in the sock configuration, the overall article has a consistent thickness throughout the foot, ankle, and calf portions.