DESCRIPTION: -Reusable Economy Set: The starter tray is made of high quality plastic. After use, it can be washed with clean water for the next use. Each starter kit contains: 10 seed trays, 10 waterproof base trays, 10 humidity domes, 10 plant tags, 1 seed dredge, 1 seed spreader for quick seedling transplants and 1 pair of gloves. Easily meet the needs of your indoor nursery. - Humidity Adjustable: There is an adjustable device on the top of the seedling tray, which can easily control the humidity of plant growth by adjusting the size of the air outlet, effectively improving the success rate of seedlings. Because high humidity can cause plants to rot. -Waterproof Design: There are drainage holes at the bottom of each type of pan. When you accidentally water it, water can flow out from the bottom to avoid excess soil moisture. This design takes into account an appropriate upper limit of soil moisture. - Observe the growth progress of seedlings: The transparent top cover can not only monitor the growth progress of seeds, but also allow 100% sunlight through, allowing seedlings to get better light, which beneficial for seedling growth. - Perfect size for planting seeds: 1.5" long, 1.5" wide and 2" high. Cells of this size are ideal for growing tomato, melon, squash, cucumber, flower, herbs and other vegetables.