A cover for a prosthetic leg having an outer layer, an inner layer and a foam insert. The outer layer has at least two side edges and an inner surface. The inner layer is permanently attached to the outer layer at the two side edges so as to form a pocket between the inner surface of the outer layer and the inner layer. The foam insert is shaped as a partial human leg, and has an inner cavity and an outer surface. The foam insert is positioned inside the formed pocket such that its inner cavity is located adjacent to the inner layer, its outer surface faces the inner surface of the outer layer, and the entire foam insert is located below the top edge of the inner layer. Further, the cover includes a closing mechanism attached to the two side edges to selectively and securely attach the two side edges to each other.