A CocoMat measuring 20" x 12" x 1.2" made from coco fibres and latex with Root Control Sheet ready cut to size. CocoMat holds all the moisture required. Fill your tray just once and CocoMat will water the plants for up to ten days. The CocoMat controls watering by holding and gradually wicking the water to the plants via capillary action. Simply place your CocoMat into a tray, fill the tray with water, place your seed tray on top and grow!