To use these New Balance 840V5 women's running shoes, simply adjust the laces to get a comfortable and snug fit. Tie them tightly enough so the shoes don't slip off while you're running, but not so tight that they cut off circulation. When you're running, the shoes' ABZORB midsole will absorb the impact, giving you a smooth and responsive ride. For maintenance, it's a good idea to clean them regularly. You can use a soft brush and mild soap to gently clean the mesh and synthetic upper. Don't put them in the washing machine as it might damage the structure. Let them air - dry naturally. Also, keep them away from extreme heat and direct sunlight, as this can cause the materials to deteriorate. When not in use, store them in a cool, dry place.