This is the Sienna plein air pastel box -- though I don't see any particular requirement for the 'plein air' bit: this would be just as useful indoors if you had no other pastel compartments and no other easel. This will however be super for summer in the mountains, when I have to leave my studio behind. On the back of the lid, unseen, is a tray that latches on to the side edge, as a work area: meanwhile it sits within the lid top and is secured by two little magnets. (See the commercial picture, below.) The provided hook can be used to dangle a cloth, as shown. On the easel for demonstration purposes: a new work in progress. I often note that in any film or book, the artwork shown 'in progress' is actually and obviously a complete and finished work! I don't know why it never occurs to movie directors that they'd be more true to life if they hired an artist not to paint the whole thing but just to paint part way and stop! Or lend, for a fee, an unfinished work. Even art books, unless illustrating step-by-step instructions, share this tendency to show finished works rather than otherwise. So there you go: I am showing the box with its adjustable edge supports, with a bit-less-than-halfway-through work between them! It's just basic fine-grit black sandpaper that I had on hand in my toolbox!