CARSTY natural raised garden bed is made of non-paint, harmless 100% solid fir wood, which is known for its strength and dimensional stability better than cedar. Raised Design will protect your plants from being damage by small animals and alleviates stooping over to care for it. There are four drainage holes in the bottom which are convenient to drain out excess water. Inner Liner keep soil and moisture from rotting the wood. CARSTY is also very easy to assemble, a screwdriver will work to assemble this raised garden bed.