Using these Naot Okahu sneakers is easy. Just slip them on and go! They're true to size, but if you're a half size, it's best to size down. For maintenance, you can remove the footbeds and replace them with new ones when needed. This will extend the life of your shoes. The polyurethane sole is lightweight and slip-resistant, but it's still a good idea to be careful on wet or slippery surfaces. Keep them clean by wiping with a damp cloth. With proper care, these sneakers will serve you well for a long time.