Exhibit 99.1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D (including additional amendments thereto) with respect to the shares of Common Stock, $0.001 par value, of U.S. Auto Parts Network, Inc., a Delaware corporation. This Joint Filing Agreement shall be filed as an Exhibit to such Statement.

Dated: October 22, 2018

KANEN WEALTH MANAGEMENT, LLC
By:	/s/ David L. Kanen
	Name:	David L. Kanen
	Title:	Managing Member
PHILOTIMO FUND, LP
By:	Kanen Wealth Management, LLC
	its general partner
By:	/s/ David L. Kanen
	Name:	David L. Kanen
	Title:	Managing Member
/s/ David L. Kanen
DAVID L. KANEN