Content Size:You will receive 12pcs lengthened grow sponges for hydroponics, each grow sponge measures about 5.5cm / 2.2inch long. Enough quantity can satisfy your daily needs of plants hydroponic cultivation. Premium Material:Made of high-quality sphagnum peat, great for plants germination. With these grow sponges, the seedlings after rooting can easily be transplanted to the soil. They are eco-friendly and degradable. You can use them for quite a long time with confidence. Quality DryProcessing: Thesegrowthspongeplugs are all dried before transportation. Only if they are attached with water, the seed pods can start to work. So you need to store them sealed before using to isolate air and water. At the same time, the size will become bigger after soaking. Easy to Use: Just remove the old sponges and replace them with new grow sponges. The bottom of seed pods is closed to ensure your precious seeds not to fall into water. Wide Application: Good choice for growing various vegetables, plants, herbs, flowers, strawberries, tomatoes, peppers, basil, etc. Suitable for hydroponic growing system. They can bring you much fun of planting.