The Baby Mat is the perfect little tool for when you want to use bottom watering (gnats, am I right?), a humidity tray, or a catch tray for your pots, etc., etc.. It is easy to assemble, & we use plastic snaps so you don’t have to worry about rust! N.B. Size prior to using snaps. Baby Mat/ Bottom Watering/ Humidity Tray/ Mini Plant Tray/ Catch Pot