A breast implant includes a flexible shell having an anterior face including an outer surface and an inner surface, and a marker attached to the inner surface of the anterior face of the shell. The marker includes a first layer of material having a radiopaque surface with readable characters for identifying a characteristic of the breast implant while in vivo, and a second layer of non-radiopaque material laminated onto the radiopaque surface. The readable characters defined by an outline formed from an absence of at least a portion of material of the radiopaque surface. The first layer of material with the readable characters is interposed between the inner surface of the anterior face of the shell and the second layer, and the readable characters are viewable in vivo using conventional imaging techniques.