Travelstacks is a set of 3 plastic, stackable containers for use in a your car's cup holder. Use Travelstacks to store your day's fill of snacks - you can easily transport and keep separate your morning yogurt, your mid-day sandwich, and your pre-gym trail mix (or whatever arrangement fits your snacking desires). If you are not the bring-your-lunch to work type, not a worry, Travelstacks can be used as additional storage in your car for your parking meter change, parking tickets, keys, or your local coffee shop frequenter's punch card. When you want to access a container's contents, simply rotate the container 360 degrees. When not in use, all containers gently snap into a single vertical alignment. Travelstacks can be easily broken down for cleaning or storage purposes. Simply remove the top hard rubber ring by grabbing its tab and then pull each container from the center cup holder. Customize Travelstacks for your needs: Use all three trays at once or pop in the plastic spacer and use just 1 or 2 at a time. The travelstacks rubberized base will fit most standard car cup holders.