Zumiez Inc. announced that total net sales for the five-week period ended July 5, 2008 increased 10.2% to $34.7 million, compared to $31.5 million for the five-week period ended July 7, 2007. The company's comparable store sales decreased 3.4% for the five-week period, versus a comparable store sales increase of 13.7% in the year ago period.