These New Balance women's shoes are super easy to use. Just lace them up to your desired tightness for a custom fit. You can wear them for gym workouts like running on the treadmill or for casual daily activities such as walking around the neighborhood. When it comes to maintenance, it's simple. Use a soft brush to gently clean off dirt from the upper part. If there are stubborn stains, you can use a mild detergent and water solution. Make sure to air - dry them away from direct heat. Keep in mind that the 6 mm drop is an approximate value due to manufacturing differences, so don't worry too much if it varies slightly. Enjoy your stylish and comfortable shoes!