Brand new Kit - Strong Seed Trays with Humidity Domes, Cell Trays Value Package: Includes 2 seed growing trays with 60 cells in each, 2 trays to fit underneath, 2 clear matching humidity domes, and two 10? x 20.75? seedling heat mats, makes it a complet set and ideal gift for gardener! Sturdy And Heavy Duty: High quality plastic is durable, reusable and recyclable - perfect for starting seeds, plant cloning, growing herb and salad leaves. Trays features no hole - save you time to water the soils and prevent leaking. Excellent Humidity Control: Our high-rise, transparent domes have 2 adjustable circular vents designed into the top - provides smooth airflow control, maximum light penetration and the best viewing angle of your plants. Perfect Fit: The dome and seed starter tray fit tightly together, forming a seal that helps maintain both heat and humidity inside the trays - ensures the healthy and robust growth of your seedlings and plants. Constant Even Heat To Root Zone: The waterproof and heavy-duty heat mat warms soil to around 10?-20? above ambient air temperature which provides the optimum environment for seed germination or cutting propagation.