A big part of the appeal of G-Star RAW denim is the fact that they use ultra high quality fabrics that come from exclusively licensed mills. This organic process is reflected in the "RAW" name itself. Another reason jeans lovers have become fond of this particular brand is the little extras and fine details you'll find on a pair, such as additional zippers and complex seam lines.
Although they specialize in upscale urban denim, G-Star also has several lines of other types of garments. However, G-Star is by far most popular for their jeans, which they've been producing on a mass scale since 1996.