This is a nice set of paints. The box holds more than the usual 12. I did find the pans wanted to slide around so I used rubber cement to tack them down. Worked like a charm! I actually saved the cotman paints to refill my smaller pocket box and replaced with the artist grade Winsor and Newton paints which are a bit clearer in color. But even the cotman are nice to work with. I just find they don't mix quite as well for purples and greens. This set has those colors without mixing making it preferable to the pocket box if you prefer cleaner, clearer purples. I have attached my color mixing chart with the professional paints I used to refill my box. If you compare to the cotman sketcher pocket box mixing chart (also below) you can see the colors are brighter and clearer. But the cotmans are still a great set that I use when out and about. I kept the paints from this kit to refill the smaller pocket box.