Using these chairs is easy. Just unfold them and place them on a flat surface. They're great for little ones in preschool or kindergarten to sit on during playtime or snack time. When you're done, simply fold them up for easy storage. As for maintenance, a quick wipe with a damp cloth will keep them clean. Avoid exposing them to extreme temperatures or rough handling. And always make sure the weight on the chair doesn't exceed 220 lb to keep it in good condition.