How to use: Slip your feet into the shoes just like you would with any other running shoes. Lace them up to your desired tightness for a secure fit. Then you're ready to hit the road for a great run. Attention: Avoid wearing these shoes in extremely muddy or dirty environments as it can damage the upper material. Also, don't wear them for activities other than running as they are specifically designed for road running. Maintenance: After each run, wipe off any dirt or debris with a damp cloth. Let them air dry naturally. If the insoles get dirty, you can remove them and wash them gently by hand. This will help keep your Brooks Glycerin GTS 21 shoes in great condition for a long time.