These chairs are super easy to use. Just place them wherever you need seating, indoors or outdoors. They're ready to use right out of the box as no assembly is required. When it comes to weight, they can hold up to 400 LBS, so you don't have to worry about sitting comfortably. For stacking, you can stack up to 5 chairs high, which is great for storage. To keep your floors safe, the fixed floor glides will prevent any scratches on indoor surfaces. As for maintenance, simply wipe the chairs clean with a damp cloth. Since they're made with fade-resistant Textilene and rust-resistant aluminum frames, they can handle all kinds of weather, but it's still a good idea to store them indoors during extreme weather conditions for even longer life.