We have 4 different static docking stations, the low unit is ideal for younger year groups. The tray, cupboard and shelf docking stations are all a bit taller to give you more storage in smaller spaces. All the units have the handy top wellthat will hold an extra 3 trays. Also the pull-out units are easy to move around the classroom and then hide away neatly when you’re finished. All of our units come in our four bright colours, some with trays, all with castors and handles!