Discover this all - in - one hydroponic growing kit with 172 pieces of essential accessories. The sponges are made of premium natural peat, offering excellent breathability and absorbency, ideal for various indoor and outdoor plants. The baskets and domes are crafted from durable resin, reusable and eco - friendly. The kit fits most round - hole hydroponic machines, with sponges that measure around 2.55 in. x 0.95 in. after water absorption and can be cut to size. Using it is a breeze: soak the sponges for 10- 30 minutes, place them in the baskets, and put them in your hydroponic garden. With seedling covers, stickers, and 2 bottles of A and B plant food included, it's a perfect choice for anyone looking to grow plants hydroponically, whether at home or in a small garden. Color: Multi-Colored.