These Demonia Swing - 260 knee high boots are super easy to use. Just untie the laces, unzip the side zipper, and slip your feet in. When you're done, zip them up and tie the laces to your desired tightness. For sizing, always check the size guide as they fit true to size. As for maintenance, keep them away from sharp objects to avoid scratches. You can clean them with a soft, dry cloth regularly. If they get wet, let them air dry naturally. Don't use high - heat sources like a hair dryer as it may damage the material. When not in use, store them in a cool, dry place to keep them in good condition.