An improved breast prosthesis for insertion under the sub-cutaneous tissue or muscle of the chest wall formed as a plurality of compartments each containing silicone gel or the like. The surface area to volume ratio of the apical compartment is smaller than the basilar one so that the appearance of projection is produced and pressure on the apex results in basilar deformation, reducing the perception of apical firmness. Preferably the skin is of PTFE possibly reducing capsular contractive and the perception of excessive firmness.
