I bought this after seeing a review from it from a channel I follow on YouTube and I love it! This demi size is the perfect size to take in my pocket with a small sketchbook and waterbrush when I go walking in the morning. It is just like a business card holder (the demi is half the size of a standard business card) and the removal paint pans attach magnetically, allowing you to buy additional sizes and change the amount and size of the pans you have inside. I bought a variety of different pans so I could customize and swap colours easily. I can't recommend this palette enough if you are someone who like to get out and about in nature and not carry a lot of gear with you. I am currently using it with gouache paint, you let it dry overnight until it's hard before using. I have bought some tube watercolours to add to my spare pans so I can swap them out when I want a different medium. I bought the black version but I like that it has two colour options (black and silver).