Using the humangear Stax is super easy. First, just twist the containers 180 degrees to click them together. You can build your storage setup as you like. When you want to take something out, simply separate the containers the same way. Each container has a leak - proof lid, so you can store liquids or other items without worry. The ClipHandle on top is removable. If you don't need it, just take it off. For maintenance, wash the containers and the ClipHandle with mild soap and water. Don't use abrasive cleaners as they may damage the surface. After washing, let them dry completely before using or storing them.