The morphological structural design of the POLYTECH Daigon\Gel 4Two implants means that it is possible to select among a large variety of projections while only needing to take into consideration a small number of sizes. These implants are available in anatomical-oval, regular-round, and anatomical-round shapes; and in moderate, high, and extra high projections. The design of these implants is such as to reduce occurrences of seroma, and implant rotation or dislocation. Two gels are used in the construction of each implant. A perfect fit of the implant to the rib cage is ensured by using a softer gel in the rear of the implant, while the firmer get in front provides needed tissue support.