Scott, those are C&F waterproof boxes. They are great boxes.
I am thinking about getting one of these. C and F Design Waterproof Boxes » Large-Sized » 12-Compartment / 8-Row Box
They look like they would be great for holding nymphs in the foam and drys in the compartments. Could also use a compartment or two for indicators and/or split shot/putty. Anyone have or used one of these boxes?