Compact, no nonsense, the 5 pan.  Perfect if you love to paint plein air or at a coffee shop, it's compact design with no harsh corners makes it easy to clean and chip resistant - but I wouldn't advise you pack it in the bottom of your bag, it is still ceramic after all! 
 
They are made from a slightly sandy clay (grogged) to add strength and are glazed in an off white gloss.