Four of these cleared out my entire filing cabinet and the built-in disks on the bottom make sliding them under my desk way easier than dragging a heavy box. The latches actually snap tight too, so nothing spilled when I stacked two of them in the closet.
I was dreading the office purgatory of shoving banker's boxes across carpet, but the low-friction disks on the bottom make sliding these around a one-finger job. Stacked three high with the lids locked on, they've held up fine for months of heavy legal files.
The stacking lids actually hold steady when I pile all four in the closet, which I didn't expect at this price. Only gripe is the latches feel a bit stiff to snap shut, but they do stay closed once they're on.