I've been buying these boxes for years. They are easy to store flat until needed and are quick to assemble. They are sturdy and come with a top. They have handholds on each end which makes it easy to carry them. I have no basement so must store things in my attic. The boxes are easy to transport and stack. One can write labels on the side either permanently with a marker or by attaching a sticky note. When I make donations to charities I use these boxes to hold what I am giving away.
I know that "one gets what one pays for" but somehow I thought these boxes would be the sturdy archive boxes we'd gotten in the past. Wrong. They are lightweight and flimsy and wouldn't have held all the archives we needed. So I returned them. I'm not sure what this quality of storage boxes would be good for: a blanket or summer clothes? Not papers books any slightly heavy objects you want to store.