Using these chairs is super easy. Just place them wherever you need, indoors or outdoors. Since they're fully assembled, you can start using them right away. When stacking, make sure to stack them up to 17 chairs as recommended to keep them stable. As for weight, don't exceed the 352 - lb capacity to avoid any damage. For cleaning, use a mild soap and water solution to wipe down the metal frame and the faux teak back. Keep them away from sharp objects to prevent scratches on the frame and the back. When not in use, store them in a dry place to extend their lifespan.