This is a really nice and sturdy backpack.  We previously had another CalPak rolling backpack (the Impactor), but the handle broke after about a month.  So we decided to still purchase another CalPak, but different model because we like how it can fit an 18oz water bottle on the side pocket.  We couldn't find many rolling backpack models that could accommodate a larger sized water bottle.  This particular model (the Element) is much sturdier and the fabric looks clean/bright.  The fabric on the Impactor seemed old and the colors dull.  The CalPack Element is a great purchase - we highly recommend.