Made of plastic material, sturdy enough for multiple use; Each Tray measures 7" * 5.2" * 2", each cell measures 1.69" deep
Transparent lid dome helps against the frost and in day birds cannot dig out seeds or new grown plants and form a good enough seal to keep in the humidity, also make you easily observe the plants growth
Drain holes at bottom of each cell for watering
Base tray provides the space for excess water draining without plants sitting in water, gives warmth to the seed bed and balances moisture level; the color of base tray will be sent at random, you may get different color, maybe not white color base tray as the pictures showing, thanks for your understanding
Great to start your seeds in and easy to find small places near the windows allowing to germinate.