To use these Fly London YOZA438FLY heels, simply slip them on. They're perfect for various occasions like parties or a night out. When it comes to maintenance, use a soft leather cleaner to keep the leather upper looking great. Avoid wearing them in very wet conditions as this might damage the leather. After use, store them in a cool, dry place. Since the measurements can vary by size, double - check the size chart before buying to ensure a proper fit.