1. Seedling Tray with Adjustable Grow LightSeed starter trays come with grow lights, which features 5 brightness modes and 3 timing functions(3H/6H/12H) to provide a better environment for seed germination. 2. Plant Germination Trays with Humidity DomeSeedling starter trays are designed with detachable humidity dome. The transparent humidity domes have 2 adjustable circular vents to regulate humidity and temperature for different stages of seed to seedling growth. 3. Solid Seed Germination TraysSeeding starter trays are made of durable plastic material with clear tray design to allow you to see the soil condition of the seeds. The seed trays can be cleaned and used again for the next batch of seeds, sturdy for longterm use. 4. Base Greenhouse Germination KitSeed starting kit with grow light can support different plant growth stages. Each cell of the seedling tray features a leak hole to prevent over watering. The leak hole makes the soil to selfadjust to a better moisture level for the seeds.