As my headline says, this case is simple, cheap and functional. Realistically you can only get 18 in this case. They get slightly crushed (but still usable) if you stuff the full 20 in, due to the interior angles along the edges and thin profile of the case. If they made it an extra 1/16th of an inch thicker (1/32nd per side) this would not be a problem. But for a cheap chinese made case it works as designed, and much slimmer profile in your pocket than a normal pack of smokes, with less chance of hard objects crushing even hard packs.