Adjustable implants has a low-bleed, gel-filled outer lumen and an adjustable saline-fillable inner lumen. The resulting devices combine the advantages of tissue expanders with the feel of a gel breast implant. In order to provide a prosthesis with elasticity and integrity, the outer and inner shells are made with successive cross-linked layers of silicone elastomer. The textured SILTEX™ shell provides a disruptive service for collagen interface. The silicone elastomer fill tube is pre-inserted into the dual selfsealing valve system at the time of manufacture and is joined to the injection dome by the connector system at the time of surgery. Two types of connector systems and injection domes are provided with BECKER™ product and either may be used. The inner lumen can be gradually filled with saline over an extended period of time via the fill tube and injection dome. Once expanded to the desired volume, the fill tube and injection dome are removed through a small incision under local anesthetic, and the prosthesis remains in position as a breast implant. The saline-filled inner lumen of the SILTEX™ BECKER™ Expander/Breast Implant provides the physician with the ability to control, within specified limits, the amount of expansion desired.