I find these sturdy storage boxes very useful for keeping my embroidery threads tidy and stopping them getting tangled. Similar colours can be stored together with their shade numbers visible.
I personally use the one larger compartment for the threads I am using on my current project because it's long enough to take my needle case as well.
I am delighted that the bobbins included are now plastic instead of the previous card ones as they will last much longer when handled regularly.
This box and its bobbins are excellent value for money too. Highly recommended for people who like to be tidy!