Using these knee pads is super easy. Just unzip the on/off zipper and slide them onto your knees. Adjust the expansion zipper if you have larger legs. When you're done, unzip and take them off. As for maintenance, simply wipe them with a damp cloth to keep them clean. Avoid using harsh chemicals. Also, store them in a cool, dry place. These knee pads are very flexible, but don't bend them excessively to prevent damage. They're suitable for various tasks, especially flooring installation, so enjoy the comfort and support they provide!