I bought a pair of the Levi's Men's 505 Regular Fit Twill Pants in the "Timberwolf" color (khaki).  I bought these at the same time as two different 505 Levi's in different fabrics.

The fit of these pants is fine, and the quality of the assembly seems satisfactory.  The problem is the fabric, which seems very low quality.  It is thin and flimsy feeling.  The weave is loose and irregular, with many small but visible flaws.  The yarn in the fabric also appears low quality, with lots of tiny tufts of loose fibers sticking out.  It feels like a $12 pair of no-name pants at Walmart, not a $59.50 name brand Levis.  My $13 Kirkland jeans from Costco are much higher quality.  I am wondering if these are really authentic Levis, or a skillful fake.  All the labels and tags look authentic, but the cheap fabric says fake.