Using these AltaSOFT Knee Protectors is easy. First, adjust the straps to fit your knees comfortably using the Original AltaLOK Easy On/Off locks. Make sure the fasteners on the right - side of each pad are secure. For best results, wear them during tactical activities where you need silent and lightweight protection. When it comes to maintenance, simply wipe the Cordura Nylon cover with a damp cloth to remove dirt. If the brushed tricot liner gets dirty, you can hand - wash it gently. Avoid using harsh chemicals as they may damage the materials. Also, store them in a dry place when not in use to keep them in good condition.