Exhibit 3.1

AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

OF

MOBILE MINI, INC.

ARTICLE FIRST. The name of the corporation is MOBILE MINI, INC. (the “Corporation”).

ARTICLE SECOND. The address of the Corporation’s registered office in the State of Delaware is 1209 Orange Street, Wilmington, New Castle County, Delaware 19801. The name of its registered agent at such address is The Corporation Trust Company.

ARTICLE THIRD. The purpose of the Corporation is to engage in any lawful act or activity for which corporations may be organized under the General Corporation Law of the State of Delaware (the “DGCL”).

ARTICLE FOURTH. The total number of shares of stock that the Corporation shall have authority to issue is 100. All such shares are to be common stock, par value of $0.01 per share, and are to be of one class.

ARTICLE FIFTH. Unless and except to the extent that the bylaws of the Corporation shall so require, the election of directors of the corporation need not be by written ballot.

ARTICLE SIXTH. A director of the Corporation shall not be liable to the Corporation or its stockholders for monetary damages for breach of fiduciary duty as a director, except to the extent such exemption from liability or limitation thereof is not permitted under any provision of the DGCL, as the same now exists or may hereafter be amended. Any amendment, modification or repeal of the foregoing sentence shall not adversely affect any right or protection of a director of the Corporation hereunder in respect of any act or omission occurring prior to the time of such amendment, modification or repeal.

ARTICLE SEVENTH. To the fullest extent permitted by Section 145 of the DGCL, as the same may be amended and supplemented, the Corporation shall indemnify any and all persons whom it shall have power to indemnify under such section from and against any and all of the expenses, liabilities or other matters referred to in or covered by such section, including directors and officers of the Corporation who were directors or officers of the Corporation prior to the Effective Time, and the Corporation may, in the sole discretion of the Corporation’s Board of Directors (the “Board”) and to such extent and to such effect as the Board shall determine to be appropriate and authorized by the DGCL, indemnify and hold harmless those individuals who served as employees or agents of the Corporation prior to the Effective Time. The indemnification provided for herein shall not be deemed exclusive of any other rights to which those indemnified may be entitled under any bylaw, agreement, vote of stockholders or otherwise, both as to action in his or her official capacity and to action in another capacity while holding such office, and shall continue as to a person who has ceased to be a director, officer, employee or agent and shall inure to the benefit of the heirs, executors and administrators of such person.

ARTICLE EIGHTH. In furtherance and not in limitation of the powers conferred by the laws of the State of Delaware, the Board of Directors of the Corporation is expressly authorized to make, alter and repeal the bylaws of the Corporation, subject to the power of the stockholders of the Corporation to alter or repeal any bylaw.

ARTICLE NINTH. The Corporation reserves the right at any time, and from time to time, to amend, alter, change or repeal any provision contained in this Amended and Restated Certificate of Incorporation, and other provisions authorized by the laws of the State of Delaware at the time in force may be added or inserted, in the manner now or hereafter prescribed by law; and all rights, preferences and privileges of whatsoever nature conferred upon stockholders, directors or any other persons whomsoever by and pursuant to this Certificate of Incorporation in its present form or as hereafter amended are granted subject to the rights reserved in this article.