The invention relates to a liner for connecting a prosthesis with the stump of an amputated lower leg. The liner comprises a stocking from a substantially flexible material for surrounding the stump with a first, open end for receiving the stump there through and a second, closed end which is, on the outside, provided with coupling means for coupling to the prosthesis. The liner is, on the inside, provided with a substantially form-retaining disc for supporting the end of the stump. Further, the substantially form-retaining disc is substantially non-round in a view from the open end of the stocking.