To use these Naot Autan women's loafers, simply unzip the double - sided zippers and slip your feet in. When taking them off, unzip again. As for sizing, remember that if you're a half - size, go up a size for the best fit. For maintenance, clean the shoes regularly with a soft cloth to keep them looking nice. Avoid exposing them to extreme heat or moisture. You can replace the removable footbed when it starts to wear out to keep the shoes comfortable. If you're using orthotics, you can easily insert them into the shoes because they're orthotic - friendly.