Using these New Balance 1080V13 shoes is a breeze. Just lace them up and you're ready to go, whether you're out for a run or just walking around. When running, they'll give you great support and a smooth ride. As for size, the 6 mm drop is approximate, so keep that in mind when choosing your fit. For maintenance, it's best to clean them regularly. You can use a soft brush and mild soap to gently clean the mesh upper and the outsole. Avoid using harsh chemicals as they might damage the materials. Store them in a cool, dry place to keep them in good condition. Also, be aware that the metallic accents in the Holiday pack might scratch if they come into contact with rough surfaces, so try to protect them when you can.