The Space Aid Box 900 is unlike any other 3D printed first aid box. One reason is that it has a easy slide-on top that prevents the lid from floating around when it isn’t supposed to be opened. The other reason is that it has a little shelf that creates a little pocket. The pockets prevents things like bandaids from floating around when the box is opened. Those are the two features that make it unlike any other 3D printed first aid box. It should be printed out of metal so it is magnetic. That way astronauts don’t have to carry it all day. On Mars the items inside won’t float around and get dirty. If you put something like pills inside, you don’t want them floating around and you having to search for 20 minutes for them.