I have been very satisfied with this specific silicone color case. Initially, it is extremely convenient because you can keep all your colors together, and the colors do not dry out quickly, probably due to the silicone they have on top. I use it for gouache colors, but I plan to order another one immediately to try it out and also put acrylic colors inside. This way, I won't have to carry all the tubes with me wherever I go to paint. I highly recommend it, giving it 5 stars!