Sientra, Inc. ("Sientra", the "Company," "we," "our" or "us") is a medical aesthetics company committed to making a difference in patients' lives by enhancing their body image, growing their self‑esteem and restoring their confidence. We were founded to provide greater choices to board‑certified plastic surgeons and patients in need of medical aesthetics products. We have developed a broad portfolio of products with technologically differentiated characteristics, supported by independent laboratory testing and strong clinical trial outcomes. We sell our breast implants and breast tissue expanders, or Breast Products, exclusively to board‑certified and board‑admissible plastic surgeons and tailor our customer service offerings to their specific needs, which we believe helps secure their loyalty and confidence.
On June 11, 2017, we entered into a Merger Agreement with miraDry (formerly Miramar Labs) pursuant to which we commenced a tender offer to purchase all of the outstanding shares of miraDry's common stock. Pursuant to the transaction, which closed on July 25, 2017 we added the miraDry System, the only FDA cleared device to reduce underarm sweat, odor and hair of all colors to our aesthetics portfolio. Following our acquisition of miraDry in July 2017, we began selling the miraDry System and bioTips. As a result of the miraDry acquisition, we determined that we will conduct our business in two operating segments. The Breast Products segment is comprised of our breast implants, tissue expanders and scar management products. The miraDry segment is comprised of our miraDry System and bioTips.
We sell both our Breast Products and miraDry products in the U.S. through a direct sales organization, which as of December 31, 2018, consisted of 103 employees, including 86 sales representatives and 17 sales managers. Additionally, we also sell our miraDry System in several international markets where we leverage a combination of distributor relationships and direct sales efforts. As of December 31, 2018, our international operations were supported by 6 sales representatives, as well as a number of consultants supporting both direct sales efforts and distributer relationships.