The Dekton propagator is constructed from durable, thick plastic that is both reusable and able to withstand pressure without losing soil or absorbing too much moisture. The seedling tray features a control humidity dome that can be opened or closed at any time. Adjustable vents on the dome allow you to regulate temperature and humidity, making it easy to observe seedlings without disrupting growth. The dome also helps to maintain moisture and a constant soil temperature. Dimensions 37.5cm x 24cm x 18cm .