Using these school chairs is a breeze! Just take them out of the box and they're ready for use. Place them wherever you need seating for preschool or kindergarten kids. Since they're stackable, you can stack up to 10 chairs when they're not in use to save space. When it comes to cleaning, simply wipe them down with a damp cloth. Avoid using abrasive cleaners as they might damage the polypropylene shell. Also, make sure not to exceed the 176 lb. static load capacity to keep the chairs in good condition. Keep them away from sharp objects to prevent scratches and dents. If you notice any loose parts or signs of wear, it's a good idea to replace the chair to ensure the safety of the children.