The invention relates to a method for making an endoluminal prosthesis. The method comprises the steps:joining an elongate support wire member to a polymer cladding; helically wrapping a length of the joined support wire member and polymer cladding such that adjacent windings of the polymer cladding have overlapping regions; and heating the joined support wire member and polymer cladding above the melt point of the polymer cladding to form a generally tubular structure having a first diameter.