To use these shoes, simply unzip the metal inside closure, slip your feet in, and lace up the front as tight or loose as you like. You can attach or remove the PVC harness with the hanging bondage strap according to your style preference. When it comes to sizing, since they fit true to size, you can order your regular shoe size. For maintenance, use a soft cloth to wipe off any dirt or dust regularly. Avoid getting them wet as much as possible, and if they do get wet, let them dry naturally away from direct heat. Store them in a cool, dry place when not in use to keep them in good condition.