Intraoperative, Single-use, Sterile, Silicone Breast Sizers Motiva Implant Matrix® are used during breast augmentation or reconstruction procedures to assist the surgeon in determining the appropriate size of the long-term breast implant to use. Prior to using the Intraoperative, Single-use, Sterile, Silicone Breast Sizers, the physician should be familiar with all the literature associated with the Motiva Implant Matrix® implants to be used