EXHIBIT 23.1 [DELOITTE & TOUCHE LETTERHEAD] INDEPENDENT AUDITOR'S CONSENT To the Board of Director and Shareholders of Columbia Sportswear Company Portland, Oregon We consent to the incorporation by reference in Registration Statements Nos. 333-53785 and 333-80387 on Form S-8 of our report dated February 1, 2000 appearing in this Annual Report on Form 10-K of Columbia Sportswear Company for the year ended December 31, 1999. /s/ Deloitte & Touche LLP - ----------------------------- DELOITTE & TOUCHE LLP Portland, Oregon March 28, 2000