EXHIBIT 24
		     POWER OF ATTORNEY

      Know all by these presents, that the undersigned hereby constitutes
and appoints each of John P. Stanton and Mehri F. Shadman, or either of
them signing singly, and with full power of substitution, the undersigned's
true and lawful attorney-in-fact to:

(1)  prepare, execute in the undersigned's name and on the undersigned's
behalf, and submit to the U.S. Securities and Exchange Commission (the "SEC")
a Form ID, including amendments thereto, and any other documents necessary
or appropriate to obtain codes and passwords enabling the undersigned
to make electronic filings with the SEC of reports required by Section
16(a) of the Securities Exchange Act of 1934 or any rule or regulation
of the SEC;

(2)  execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer and/or director of Under Armour, Inc. (the "Company"),
Forms 3, 4, and 5 in accordance with Section 16(a) of the Securities
Exchange Act of 1934 and the rules thereunder;

(3)  do and perform any and all acts for and on behalf of the undersigned
which may be necessary or desirable to complete and execute any such Form
3, 4, or 5, complete and execute any amendment or amendments thereto, and
timely file such form with the SEC and any stock exchange or
similar authority; and

(4) take any other action of any type whatsoever in connection with
the foregoing which, in the opinion of such attorney-in-fact, may be
of benefit to, in the best interest of, or legally required by, the
undersigned, it being understood that the documents executed by such
attorney-in-fact on behalf of the undersigned pursuant to this Power
of Attorney shall be in such form and shall contain such terms and
conditions as such attorney-in-fact may approve in such
attorney-in-fact's discretion.

      The undersigned hereby grants to each such attorney-in-fact full
power and authority to do and perform any and every act and thing
whatsoever requisite, necessary, or proper to be done in the exercise
of any of the rights and powers herein granted, as fully to all intents
and purposes as the undersigned might or could do if personally
present, with full power of substitution or revocation, hereby ratifying
and confirming all that such attorney-in-fact, or such attorney-in-fact's
substitute or substitutes, shall lawfully do or cause to be done by virtue
of this power of attorney and the rights and powers herein granted. The
undersigned acknowledges that the foregoing attorneys-in-fact, in serving
in such capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned's responsibilities
to comply with Section 16 of the Securities Exchange Act of 1934.

      This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file Forms 3, 4, and 5
with respect to the undersigned's holdings of and transactions in
securities issued by the Company, unless earlier revoked by the
undersigned in a signed writing delivered to the foregoing attorneys-in-fact.

      IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 3rd day of August, 2018.

                             /s/ A.B. Krongard
                                 Signature

                                 A.B. Krongard
                                 Print Namewer of
Attorney to be executed as of this 3rd day of August, 2018.

                             /s/ A.B. Kronga