The invention relates to a fixing means which is used to temporarily fix human or animal body parts. The fixing means comprises at least one flexible carrier layer which is coated with a hardenable material, wherein the body part which is to be fixed can be surrounded either fully or partially by the fixing means and the hardenable material can then be hardened, wherein the carrier layer is stiffened. In order to provide for individual fixing of the body part while guaranteeing a partial adjustment of the desired rigidity of the fixing means, the fixing means is provided with at least two carrier layers, with at least one outer layer made of a flexible polymer film and at least one inner layer made of a flexible film in addition to at least one substantially liquid or viscous layer which is arranged between the outer and inner layer and which is made of at least one hardenable adhesive. It is thus possible to obtain the desired degree of rigidity when the adhesive has hardened by exerting manual pressure on the fixing agent which enables the hardenable adhesive to be displaced.