Berkshire Hathaway (BRK.A 0.89%) (BRK.B 0.96%) subsidiary Brooks Sports is drawing quite a bit of attention from Buffett devotees these days. The running-shoe maker has sprinted to 34% volume growth in both 2011 and 2012, with U.S. sales growth hitting the tape at 43% by the end of last year.

Our roving reporter Rex Moore caught up with Brooks CEO Jim Weber at the recent Berkshire shareholder meeting in Omaha. In this segment of a multipart series, Jim says investors should double down on the fitness category.