Hulled barley is a whole grain barley. Pearled barley is not a whole grain

Hulled barley is the true whole grain. 

Pearled barley, however, which loses both its outer layer and its bran layer, retains most of its whole-grain nutrients and fiber.

Info source:

http://preventcancer.aicr.org/site/PageServer?pagename=elements_whole_grains%20