Using these Lhasa hiking poles is a breeze. First, adjust the poles to your preferred length using the Speed Lock+ system. Make sure to set it between 90 cm and 125 cm according to your height and the terrain. When holding the poles, fasten the adjustable PA Safety strap around your hand for a secure grip. This is especially important when going downhill. As for maintenance, after each use, wipe the aluminum tubes with a clean, dry cloth to keep them in good condition. Store them in a cool, dry place. Avoid exposing them to extreme temperatures or sharp objects that could damage the poles. If you notice any issues with the grip or the locking system, have them checked by a professional.