Zumiez Inc. said net sales for the five-week period ended Jan. 1, 2011 increased 14.1% to $88.5 million, compared to $77.6 million for the five-week period ended Jan. 2, 2010.

 
The company's comparable store sales increased 9.2% for the five-week period versus a comparable store sales increase of 0.3% in the year ago period.