Sientra, Inc. is a medical aesthetics company. The Company sells breast implants and breast tissue expanders or Breast Products to plastic surgeons. The Company�s primary products are silicone gel breast implants for use in breast augmentation and breast reconstruction procedures. The Company offers its products in over 120 variations of shapes, sizes and textures. Its breast implants are approved by the United States Food and Drug Administration (FDA). The Company�s product line includes Breast implants, Breast tissue expanders, Additional Tissue Expanders, Body Contouring, Facial Implants and Med Gel Accessories. The Company offers a range of breast implants, including anatomically-shaped textured, round textured and round smooth. The Company offers a line of breast tissue expanders, most of which are marketed as ACX, in 25 different shapes and sizes that include single and double chamber tissue expanders.