Breast Augmentation 110 Natrelle INSPIRA « Back to Breast Augmentation Previous | Next Patient Details Before and two months after augmentation in sub-pectoral position with Natrelle Smooth Surface INSPIRA 520ml devices (SRF-520) via infra-mammary approach for this 22 yr. old 5"7" 145 lbs. Steve Laverson, MD, San Diego breast augmentation surgeon.