Are these the thin versions of the Iris bins?
I have the version that allows the ships to stand up and it was much more $$. It has adjustable partitions as well. My fear on keeping the Wave 2 ships in the vacuformed trays would be the risk of breakage as we have been seeing in the shipments (1st rates mainly).
These are relatively thin bins.
I've carted these around pretty aggressively with no problems (including with my fixed wave 2 ships).
However if you don't want your trays let me know 'cause I'll take them!