Never mind the quality...feel the width. Phrase used to persuade you that quantity is more important than quality. Originated from unscrupulous London backstreet tailors palming you off with cheap material instead of the good stuff for your suit.
"Hmm. This suit smells of dead germans and cat piss, and is sturdy enough to both restrain a rutting wart hog and give me heat-stroke if the mercury climbs above 60 degrees, my good man".
"Never mind the quality, feel the width my son! They don't make cloth like this anymore!"