Nestable
Empty units sit inside each other, so empties take much less space than fulls.
Nesting comes from geometry — a taper, a step, or a shape that lets one unit drop into the next. It changes the cost of the empty leg: storage, return freight and yard space all shrink when a stack of empties is a fraction of the height of the same number of full units.
You may also want to explore
What is nestable packaging?
Packaging shaped so empties take a fraction of the space fulls do.
LearnHow do empty containers affect freight cost?
Rigid packaging is efficient in one direction. The other direction is where the money leaks.
TermCollapsible
Folds down flat or into a smaller form when empty.
TermPallet utilization
How much of the pallet footprint and legal height a load actually uses.
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Educational content. Not engineering or regulatory advice — confirm ratings and specifications with your supplier and the applicable regulations.