Adjustable Humidity - There is a rotary circular switch on the top of each plant germination tray cover, which is convenient to adjust the humidity in the germination tray.nursery, reduce water evaporation, create a better growing environment for seeds and plants, and improve the survival rate.EASY TO OBSERVE - Our mini nursery greenhouse comes with a transparent plastic cover, allowing you to observe the growth of your plants at any time.Clean and space-saving - Seed germination trays with lids can be stacked, not only to save space Versatile - Seed germination trays with lids are ideal for plantssuch as flowers, herbs, tomatoes, potatoes, eggplants, peppers, etc.projects, home Horticulture, balcony vegetable garden, flower garden seedling tray group-B 10 boxes of seedling trays, each with 12 grids.Seed tray size: 19x14.5x11cm.Contents: 10 seed trays, 10 plant labels, 2 small garden tools.