OBSERVE GROWTH OF SEEDLINGS: seed starter tray covered by a transparent lid, making it become a mini greenhouse and allowing seeds to germinate quickly and grow healthily. You can also observe your plants growth through the clear lid without interrupting the process.UPGRADED SEED STARTER TRAY SET: Seed starting trays are made of high-quality thickening plastic material, much stronger than other cheap and flimsy seed trays and not easy to deform. Our seedling starting trays have excellent resistance to high and low temperature, so they are strong enough to be used on a heat mat and no-worry melting.ADJUSTABLE HUMIDITY DOME: The clear dome of seedling trays has 4 adjustable vents, you can regulate the temperature and humidity of your seedling environment more effectively, which is good for rapid growth of plants and fully control the germination process.GROW HEALTH & EFFICIENT: There are drainage holes at the bottom of each cell of the seedling starter tray to drain excess water and reduce root oversaturation. Each cell space is 1.5 inch square by 2.1 inch height, helping the plants grow in a pseudo-greenhouse environment before transplanting. The watertight base tray in the bottom can catch the excess water and falling soil from seed cell trays, keeping seed starting trays clean and tidy.colour: greenMaterial: plasticPackage Contents:12 x nursery pots20 x Plant Labels2 x Small Garden Tools1 x PenOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.