A breast implant includes an implant shell having an outer surface and defining a first fluid reservoir, and a porous membrane overlying the outer surface of the implant shell and defining a second fluid reservoir. The breast implant includes a filling tube having a first conduit in communication with the first reservoir and a second conduit in communication with the second reservoir. The breast implant includes an injection dome coupled with the filling tube and having a first fluid chamber in communication with the first conduit and a second fluid chamber in communication with the second conduit. The injection dome includes an upper end having an injection cover, a lower end including a support base, the first fluid chamber located adjacent the injection cover, the second fluid chamber located adjacent the support base, and a diaphragm dividing the first and second fluid chambers from one another.