I am a full size 10.  (In most cases, size 12 is too big).  These Dockers fit me great, and I didn't expect it.  I even tried to cancel the order.  I have big thighs.  And, usually the demi-style zippers don't leave enough room for my thighs, but these fit great.  The fabric is 76% cotton, 20% polyester and 4% elastane.  I have slacks with similar combination of fabric, and they wash beautifully -- just a quick press and you're ready to go.  I use the NYC subway system, which isn't very clean, and this type of fabric does not pick up the dirt as easily as fabrics that are 100% cotton.