These stylized heart-shaped mugs are one of a kind, I find the idea of ??giving a gift and spending time together to make it while having fun is excellent. The set is complete and contains: - 2 mugs - 12 colors - 4 brushes of two different sizes The colors are very bright but a little small, personally I would have appreciated them more if the quantity had been greater. However, they are enough to paint the two mugs, alternating them as long as we do not erase the design multiple times. They are very simple to color, and if we are not satisfied with the design, just wash them with water and the mugs will return to white. Once we have found the design or writing we like, just let the mug air dry for 30 minutes, then put it in the oven at 150 degrees for another 30 minutes. Once the oven has cooled, the mugs are ready to be used, just give them a rinse. The instructions are only in English but are illustrated and easy to understand. I found it a pleasant, relaxing pastime.