The pots are made of top-quality clay and baked at high temperatures. Terracotta Pot is crafted with porous terra cotta that allows plants' roots to breathe. Each terracotta pot comes with a drain hole in the bottom to drain the stagnant water and help you prolong the life of your precious plants. It comes 24 packs in a safety package. Clay pot would be recommended for indoor or outdoor use. *Plants and tray not included*