When you need to move or store it, grab it by the cut-out handle in the seat, and it folds closed. One negative: it’s far less beefy than it appears to be in the photo.
I really want to get the taller (13″) one as well, but it’s been difficult to find. From the many online reviews I’ve found, it appears that the taller stool’s claims of a 300-lb. capacity are greatly exaggerated—I think the material shortcomings were OK for the shorter step stool, but not the taller one. It’s somewhat telling that Kikkerland has come out with a stronger “rhino” version of the 9″ step stool.
Found: the 13″ version at mxyplyzyk.com, which also has a very nice storefront in NYC.