Im 6 235 with a thick/out of shape muscular build. I bought the largest size of these pants hoping for adequate thigh and glute space.  Sufficed to say my wife will not let me wear these out in public as my privates are is not so private in these snug pants.  They call it printing apparently, per the lusty eyed cashier at the grocery store who pointed out these ill fitting pants to my wife #agreatday
If you are of slight frame these should be great. For the big n tall, not at all. Unless you want to advertise to grocery cashiers or get yelled at by your wife :)