They aren't as big as the too faced chocolate bar shades, they aren't tiny though. The pigmentation are pretty good, honestly I don't think it should be as much as it is but it is lovely and its lovely to have in your collection.
The pans aren't super big. I use the two darker browns to do my eyebrows and I've been using them for over a year to fill my brows in and I use a TON of product. I have hit pan but I still have a ton left. The pants are probably an inch long and a half inch wide. Not super deep though.