Great Storage Piece
I bought this to hold beads originally and then changed it over to brads and eyelet storage. It is a very hard plastic. Indeed, like the other reviewer commented, the sliding lid is a bit stubborn when first used. It even squeaked. However, I've had mine for years and the lids slides better now and with no major noise. What I especially love about this piece is that even beads of the Indian bead sizing (tiny) don't jump compartments. The lid does not buckle or move to allow for compartment escape. I've never seen that in any other product of this sort. I'm super impressed.