This is a terrific way to grow your vegetable plants, flowers or use as an insert for your large containers. Made of felt, this pot allows the roots of your plant to breath (like a clay pot, without the weight). When comparing plants grown in this felt pot versus plastic, the felt pot outperforms. It also reduces the amount of plastic used. Available in two sizes, 15 liter and 25 liter. If you want to purchase soil for this bag, our 15 liter potting soil bag will fit perfectly in the small bag, the larger bag will take most of the 30 liter bag of our moisture max potting soil. Your tomatoes will thank you!