This unique 'pop-up' system allows seeds and cuttings to develop into stronger, larger and healthier plants. Simply fill the hole with potting mix, turn the clear dome lid upside down and press. You now have 49 holes to place your seeds in. The high lid and deep plant cells allow plants to grow taller, with well developed root systems, before transplanting. The lid also serves as a ventilating device. By turning it 90 degrees you can open or close the flow of air to your seedlings. The base acts as a self- watering tray and also serves as a tool to pop out your mature plants without damage. Dishwasher safe. 5"H x 9"W x 8"L.