These vintage leather suitcases are great for travel or storage. To use them, simply open the clasps and start packing your belongings. When traveling, make sure to secure the smaller cases inside larger ones if possible to save space. As for maintenance, keep them away from direct sunlight and moisture to prevent the leather from drying out or getting moldy. You can use a leather cleaner occasionally to keep the surface clean and shiny. When not in use, store them in a cool and dry place. Also, be careful with the large case as it has a missing lock button, and you may need to use an additional lock for security.